Hello XDA members. I have a very troublesome issue with my galaxy tab 3 7.0 inch tablet. It will NOT turn on at all, no battery charging, no device power on, no comp recognition, nothing. I have already tried:
Letting it charge overnight (factory charger along with others) with several known working cables
Unplug battery for 5 minutes
Press and hold power, Vol Down, and home for 10 sec, 30 sec, and 1 minute
Press and hold power and vol down for 10,30,60 seconds.
I sent it in for repair and they wouldnt fix it because it's rooted. When I got it back it briefly turned on to the battery charging, but nothing since. I'm thinking there must have been some way they got it on.... All proper drivers are installed on PC and it's never been dropped, water damaged, etc.
Would anyone be able to provide insight as to why and provide a fix?
My 8 inch tab 3 wasn't coming on either a few days back, I got it back on by holding home and the power button for a while. I was about to give upwhen the battery charging image came on. I think I did the same again and it came on normally.
a97antonio said:
My 8 inch tab 3 wasn't coming on either a few days back, I got it back on by holding home and the power button for a while. I was about to give upwhen the battery charging image came on. I think I did the same again and it came on normally.
Click to expand...
Click to collapse
Was that from computer or wall?
From wall, it was about 3/4 charged by then
a97antonio said:
My 8 inch tab 3 wasn't coming on either a few days back, I got it back on by holding home and the power button for a while. I was about to give upwhen the battery charging image came on. I think I did the same again and it came on normally.
Click to expand...
Click to collapse
a97antonio said:
From wall, it was about 3/4 charged by then
Click to expand...
Click to collapse
Still no luck... I can feel the tablet getting hot down at the charge port so I know it's charging, and i know the lcd isn't damaged.
Mine is in the same condition. Anyone know how or why this happens and how to fix it?
Sent from my LG-LS980 using Tapatalk
Not sure if this will help, but just like with phones, sometimes android tablets just need a battery pull. My kids xo tablet went dead and before I tossed it in the trash I took the housing off and had to clip the + wire since it was soldered to the board. Twisted it back together to check and sure enough the tablet powered on like normal. Ive had to pull the battery on an Sm-t217a and it was a lot easier. They have a removable clip that attaches to the board.
Sent from my SAMSUNG-SM-T217A using XDA Premium 4 mobile app
I think it might be the battery itself. Just for giggles I left it plugged in for days and i just checked back on it and the Battery charging screen kept flashing on and off. Won't hold any charge. Probably will just order a new battery and see what happens. I pulled the battery a couple times and nothing happened. Closer inspection found that the tech that looked at it damaged the battery cord (unless it came with the copper on the wiring already exposed...)
xkn0s said:
I think it might be the battery itself. Just for giggles I left it plugged in for days and i just checked back on it and the Battery charging screen kept flashing on and off. Won't hold any charge. Probably will just order a new battery and see what happens. I pulled the battery a couple times and nothing happened. Closer inspection found that the tech that looked at it damaged the battery cord (unless it came with the copper on the wiring already exposed...)
Click to expand...
Click to collapse
You might be right about the battery being dead, although they usually don't just go all at once like that. The charge indicator flashing is odd. The only thing close I've seen is an "x" over the icon when there aren't enough amps (my tab needs 2 amps. 1 amp chargers and some pc usb ports give me the x.
If you have an old cable you can cut, you could try to charge the battery itself to see if it takes a charge (or at least use a multimeter on it to check for voltage). Then you could narrow it down a bit to whether it is the battery or possibly the charge port/hardware..... I saw a bit of exposed wire just before the clip of mine too, made me extra careful pulling the clip up.
rmntruexjr said:
You might be right about the battery being dead, although they usually don't just go all at once like that. The charge indicator flashing is odd. The only thing close I've seen is an "x" over the icon when there aren't enough amps (my tab needs 2 amps. 1 amp chargers and some pc usb ports give me the x.
If you have an old cable you can cut, you could try to charge the battery itself to see if it takes a charge (or at least use a multimeter on it to check for voltage). Then you could narrow it down a bit to whether it is the battery or possibly the charge port/hardware..... I saw a bit of exposed wire just before the clip of mine too, made me extra careful pulling the clip up.
Click to expand...
Click to collapse
I wouldn't even know where to start with the wiring. Multimeter isn't something I have access to, and it seems a little complicated for me to spend time on.
When I say it's flashing, I mean the device powers on to the battery charging screen, then dies, wash rinse repeat. If I go into recovery, same thing. It all happens within a couple seconds, so it's hard to describe.
My dad has one that I can pull the battery from, I might do that. Batteries are like 20 bucks on amazon, so I think I'll test with my Dads and if it works just order a battery and report back here.
similar problem here
rmntruexjr said:
You might be right about the battery being dead, although they usually don't just go all at once like that. The charge indicator flashing is odd. The only thing close I've seen is an "x" over the icon when there aren't enough amps (my tab needs 2 amps. 1 amp chargers and some pc usb ports give me the x.
If you have an old cable you can cut, you could try to charge the battery itself to see if it takes a charge (or at least use a multimeter on it to check for voltage). Then you could narrow it down a bit to whether it is the battery or possibly the charge port/hardware..... I saw a bit of exposed wire just before the clip of mine too, made me extra careful pulling the clip up.
Click to expand...
Click to collapse
My daughters tab 3 7 inch T210 also refuses to start. First time it was fixed by opening the device and disconnecting the battery. Now that doesn't help anymore. If I attach the original charger and measure the voltage when the device has rested for some months I can see that the voltage slowly rises so it seems to do the charging even if there is no sign of charging on the screen. After some hours of charging I measure 3,78V on the battery, after disconnecting the battery.
If I attach the battery and turn on the device I measure 3,76V before I push the start button and 3,74V directly after pushing the button. After about 15s the voltage goes back to 3,76V. Nothing happens on the screen... Tried with different combinations of pushing on-button and volume up, volume down, menu....
So -the best thing would of course be a quick visit to local shop to buy a new device of another brand but for some reason I refuse to give up.
Any advice would be appreciated.
(I Have made no significant modifications but the 4-year old daughter may have contributed in an unknown way )
magnusn68 said:
My daughters tab 3 7 inch T210 also refuses to start.
So -the best thing would of course be a quick visit to local shop to buy a new device of another brand but for some reason I refuse to give up.
Any advice would be appreciated.
(I Have made no significant modifications but the 4-year old daughter may have contributed in an unknown way )
Click to expand...
Click to collapse
The better way to test if your tablet can turn on: buy a new battery, under $15 on Ebay since your old battery is dead or completely drained.
Use the new battery to turn on your tablet. If it's on, check the build number of your device after go to About My Device: if it's not end with OB1, the latest firmware which fix charging issue.
It's more likely your build number is MK1 to NI1, the build numbers count by alphabet order. Upgrade the software via Wifi, battery must be at least 25%, otherwise your tablet won't allow you to upgrade. Bring the firmware to the current OB1, your tablet should take charge normally, otherwise the USB charging port is defective or damaged. This micro USB is cheap, around $2, but it need to solder to motherboard to replace the defective one.
Related
Hey Guys,
Over the last year or so I've had intermittent charging issues with my Galaxy Nexus. About 4 months ago is when it first started happening, the phone would either not charge or only charge when it is turned off. Somehow the issue was resolved through tons of troubleshooting, I'm not even sure what fixed it or why it started working again.
Same thing happened about 2 weeks ago, except this time it won't charge at all. Then 2 days later all of a sudden started charging again. Now it's happening again today, I have no idea what is going on or why this handset won't charge properly. The phone won't turn on with just the charger in and the battery out either.
I've tried various chargers including the OEM charger, I've tried up to 6 different chargers and 7 seperate micro-USB B cords. Nothing. I've tried a brand new battery that a friend bought for his phone before he threw it in and no results.
At this point I think it's the USB charger board, however I'm not sure why it would not work and then work again. Does anyone have any ideas or any solutions? I've read thousands of threads on this, from this forum and many others and have gone through some ridiculous troubleshooting methods.
SCH-I515 Korean Version.
Seriously, anyhelp is appreciated.
As of now, all of a sudden it will charge while it's off. But only to about 4% then it just stops charging. It will not charge while it is on at all.
Because it's getting worse and worse?
Relock bootloader, and return it in for warranty, if you can. I'm afraid there's not much help if you already checked for damage to the USB port.
sent from my Google Galaxy Nexus
hi
had the same problem until a few minutes ago.
received my usb/charging flex part today and changed it just before to post here.
took me like 20 min, really easy to do, everything works perfectly and i also took time to clean up a bit the phone inside of some dirts and change the housing i bought with the flex part.
As my screen is under protection since the beginning (4 months old), and that i recently bought a 2000mah battery, well i have to say that i have a new phone ready to handle the new year easily!
operation is easy and you will find plenty of videos on youtube showing how to change the usb flex (7€/$ , +/-) so pretty cheap.
Good luck
Why not buy an external battery charger and a spare battery?
Sent from my Galaxy Nexus using xda app-developers app
I'd get a replacement daughterboard and switch it out yourself. It's easy dude, just like a previous poster already said. I just did it myself, took me all of 20 minutes and cost me $10. ifixit.com has a step by step direction sheet, if you have any questions feel free to contact me about it.
Try the following:
1.) Turn off your phone.
2.) Get a flat head screwdriver (small one)
3.) Push the flat connector inside the microusb port up. (It often gets bent downwards because it's so thin compared to other phones...)
4.) Boot into the bootloader
5.) Hit volume down until restart bootloader appears. Press power button.
6.) Start phone manually.
farshad525hou said:
Try the following:
1.) Turn off your phone.
2.) Get a flat head screwdriver (small one)
3.) Push the flat connector inside the microusb port up. (It often gets bent downwards because it's so thin compared to other phones...)
4.) Boot into the bootloader
5.) Hit volume down until restart bootloader appears. Press power button.
6.) Start phone manually.
Click to expand...
Click to collapse
i dont know why, but this fixed it for me, for a short while. now the charging is intermittent and seems to come and go as it pleases.
Hi,
I had the same problem of ghost charging, it started with phone not charging when connected to charger and then randomly showing charging...
Now discovered it causes vbus_tuna_otg wake lock, resulting in high system usage in settings> battery and not letting phone go to deep sleep, causing battery drain.
Sent from my Galaxy Nexus using Tapatalk 2
Same Problem
I've come into the same problem with my Galaxy Nexus as well. If my phone is turned on, my phone will recognize that a charger is plugged in but the battery will not charge at all. If the phone is off and plugged in, the charging screen won't appear. I've tried multiple chargers and cords, 2 different batteries, and even replaced the micro usb and board, but the problem hasn't changed at all. I've managed to charge my batteries with an external charger but would like to get my phone back to normal working condition. Does anyone think that changing the actual motherboard itself might solve the problem?
Sayword said:
I've come into the same problem with my Galaxy Nexus as well. If my phone is turned on, my phone will recognize that a charger is plugged in but the battery will not charge at all. If the phone is off and plugged in, the charging screen won't appear. I've tried multiple chargers and cords, 2 different batteries, and even replaced the micro usb and board, but the problem hasn't changed at all. I've managed to charge my batteries with an external charger but would like to get my phone back to normal working condition. Does anyone think that changing the actual motherboard itself might solve the problem?
Click to expand...
Click to collapse
I had this problem before, using something small and flat to push the charging connector off the housing will work for awhile. The pin in the charging port is bent down and is very thin it's easy to lift up just use a tiny bit of force to lift it up. The pin touching the housing is causing a short and that is causing your no charge while it's on and mine even went as far as draining my battery very quickly. I did research and found alot of people having this issue on the gnex. I eventually had to turn mine in for replacement, no problems since. Hopefully yours is still under warranty or you can buy the peice that is broken and replace yourself, there is a post above saying what to do for that.
Looks like my phone developed this problem. It sometimes won't charge be it via my pogo dock or USB cord. It seems to start taking a charge after I pop out the battery and then put it back in. I'm going to order another battery and see if that is the problem.
Thank yoiu!!
solved my problem!! I am in your debt
popping the battery out just worked for me too
hlaalu said:
Looks like my phone developed this problem. It sometimes won't charge be it via my pogo dock or USB cord. It seems to start taking a charge after I pop out the battery and then put it back in. I'm going to order another battery and see if that is the problem.
Click to expand...
Click to collapse
I just did the remove battery trick as well and it worked. I just noticed my battery not charging yesterday but figured it was because I was trying to use a different charging in my dad's car. got to work where i left my normal charger and no luck.
thefayeride said:
I just did the remove battery trick as well and it worked. I just noticed my battery not charging yesterday but figured it was because I was trying to use a different charging in my dad's car. got to work where i left my normal charger and no luck.
Click to expand...
Click to collapse
That's good, I tried it a few times but the issue still pops up. To be fair though, I've had this phone and battery since launch day... Almost three years old. I ordered a new battery so hopefully I won't have the issue anymore... And I won't be surprised if my battery life is a little better too.
Sent from my Nexus 10 using Tapatalk 2
hlaalu said:
That's good, I tried it a few times but the issue still pops up. To be fair though, I've had this phone and battery since launch day... Almost three years old. I ordered a new battery so hopefully I won't have the issue anymore... And I won't be surprised if my battery life is a little better too.
Sent from my Nexus 10 using Tapatalk 2
Click to expand...
Click to collapse
The Galaxy Nexus is nowhere near three years old. Your phone would be 18 months old if you had it since launch.
Sent from my Nexus 7 using Tapatalk HD
Excuse me, two years. According to Samsung their lithium batteries have a life of about 500 cycles. So my point is still valid, my battery is probably just on it's way out. I'll find out for sure when my new one comes tomorrow.
Sent from my Nexus 10 using Tapatalk 2
Yeah, since battery life hasn't exactly been the strong point of the GN and some of us had to go though a complete cycle daily, I suspect a lot of folks are going to be seeing more and more issues. Not too long ago, I had a battery that failed in such a way that it would randomly crash the phone and had to be pulled in order to allow a reboot. I would've suspected anything but the battery in that case.
Sent from my SCH-I545 using Tapatalk 2
farshad525hou said:
Try the following:
1.) Turn off your phone.
2.) Get a flat head screwdriver (small one)
3.) Push the flat connector inside the microusb port up. (It often gets bent downwards because it's so thin compared to other phones...)
4.) Boot into the bootloader
5.) Hit volume down until restart bootloader appears. Press power button.
6.) Start phone manually.
Click to expand...
Click to collapse
This kind of worked for me, but the "boot into bootloader and restart it" killed my phone, don't know why. After a lot of a hassle i got it on, with 2% left, again not charging...tried to repush the connector towards the center and now i cant get my charger into the phone, maybe overbend it...what to do?...
I have a strange problem, my Gnex does not charge the battery, first i thought that it was the battery so, I tested the battery on other phone and it charged just fine, and then i ordered the usb/charging assemble from ebay and replaced on my gnex, and still not charging the battery, but when i connect the phone to the pc it recognize it immediately, but still won't charge the battery, anybody has an idea of what my problem is?? and how can i solve it?
Please help!!!
Recently successfully replaced the LCD screen on my Acer A100. Device worked fine for some time after that repair. Wanting to get a secondary charger for use at work I went to radio shack. Sales "tech" tried several different adapters, found one that fit inside he port, but wiggled. She plugged it in but device wasn't showing a charge. Decided to order one from online. At home the device still would not charge with its own charger. Thought maybe the charger was faulty. Ordered two more. Still the A100 turned off when charger plugged in. Figured tech had burned out the a/c port. Ordered and installed a new one. Still A100 turns off immediately when charger is plugged in. I have 3 chargers now - same results with all 3. Have now ordered a docking station to utilize (hopefully) charging ability through 40 pin connector.
If this connection creates same shut down am I looking at a battery replacement? AM sitting at 33% battery level now, device shut down completely.
Acer wants 199.00 prepaid to submit to them for repair - this is more than I paid for the device! Not really an expense I am willing to pay if all it needs is a battery. There is no erratic behavior , just immediate shutdown as soon as a charger is connected. Any ideas?
PocketFuzz said:
Recently successfully replaced the LCD screen on my Acer A100. Device worked fine for some time after that repair. Wanting to get a secondary charger for use at work I went to radio shack. Sales "tech" tried several different adapters, found one that fit inside he port, but wiggled. She plugged it in but device wasn't showing a charge. Decided to order one from online. At home the device still would not charge with its own charger. Thought maybe the charger was faulty. Ordered two more. Still the A100 turned off when charger plugged in. Figured tech had burned out the a/c port. Ordered and installed a new one. Still A100 turns off immediately when charger is plugged in. I have 3 chargers now - same results with all 3. Have now ordered a docking station to utilize (hopefully) charging ability through 40 pin connector.
If this connection creates same shut down am I looking at a battery replacement? AM sitting at 33% battery level now, device shut down completely.
Acer wants 199.00 prepaid to submit to them for repair - this is more than I paid for the device! Not really an expense I am willing to pay if all it needs is a battery. There is no erratic behavior , just immediate shutdown as soon as a charger is connected. Any ideas?
Click to expand...
Click to collapse
If its doing it on 3 chargers its sounding more like a board charging circuit issue. You could remove the battery and then see if it behaves normally, that'll be battery or board right there. Or if you have a multi meter test output at the battery connector.
Tapatalked from my HTC DNA - ReVolt
Tried connection without battery
pio_masaki said:
If its doing it on 3 chargers its sounding more like a board charging circuit issue. You could remove the battery and then see if it behaves normally, that'll be battery or board right there. Or if you have a multi meter test output at the battery connector.
Tapatalked from my HTC DNA - ReVolt
Click to expand...
Click to collapse
Don't have a multi meter. Tried connection via new docking station, got same response: device immediately shut off. Tried your suggestion, disconnected battery connected to docking station, got immediate shut off. Same with charger via a/c port. :crying: Mainboard is out? But Device responds and acts normal when in battery mode - or is this isolated to the charging circuit part of the main board?
Thanks for the suggestion!
PocketFuzz said:
Don't have a multi meter. Tried connection via new docking station, got same response: device immediately shut off. Tried your suggestion, disconnected battery connected to docking station, got immediate shut off. Same with charger via a/c port. :crying: Mainboard is out? But Device responds and acts normal when in battery mode - or is this isolated to the charging circuit part of the main board?
Thanks for the suggestion!
Click to expand...
Click to collapse
Sounds like its tripping on the charger circuit and cutting out, like a breaker tripping. IMO look carefully for any shorts on the boards, even something stupid like dog hair can cause strange things to happen. A good blasting with air wouldn't hurt either. It could even be the dock port as it does charge from there and is subject to debris also.
Tapatalked from my HTC DNA - ReVolt
one more try
pio_masaki said:
Sounds like its tripping on the charger circuit and cutting out, like a breaker tripping. IMO look carefully for any shorts on the boards, even something stupid like dog hair can cause strange things to happen. A good blasting with air wouldn't hurt either. It could even be the dock port as it does charge from there and is subject to debris also.
Tapatalked from my HTC DNA - ReVolt
Click to expand...
Click to collapse
Thanks again for more suggestions. Yup I have been over the board and all connections with a looking glass. Changed out the A/C dock port. My suspicion is that when the Radio Shack tech powered up the "Almost fits" adapter it blew whatever breaker the board has.
When I had it connected to the docking station with the battery disconnected, it powered on, then immediately shut off. So this definitely sounds like a "blown fuse". I completely disassembled and reassembled it again (except for the LCD screen) and checked all connections and plugs. Nothing visible to indicate a burnout or cross connection.
No odd smells either. Probably some teensy weensy transistor or resistor or something. I am not an electrician - just good at R & R.
Another visit to ebay and I am parting with 50 bucks for a "factory refurbished" motherboard. In the mean time, my beloved tablet will await further surgery. Will keep you posted. Board should be here by Saturday. I hope so - battery is down to 27%. Thanks again for weighing in!
PocketFuzz said:
Thanks again for more suggestions. Yup I have been over the board and all connections with a looking glass. Changed out the A/C dock port. My suspicion is that when the Radio Shack tech powered up the "Almost fits" adapter it blew whatever breaker the board has.
When I had it connected to the docking station with the battery disconnected, it powered on, then immediately shut off. So this definitely sounds like a "blown fuse". I completely disassembled and reassembled it again (except for the LCD screen) and checked all connections and plugs. Nothing visible to indicate a burnout or cross connection.
No odd smells either. Probably some teensy weensy transistor or resistor or something. I am not an electrician - just good at R & R.
Another visit to ebay and I am parting with 50 bucks for a "factory refurbished" motherboard. In the mean time, my beloved tablet will await further surgery. Will keep you posted. Board should be here by Saturday. I hope so - battery is down to 27%. Thanks again for weighing in!
Click to expand...
Click to collapse
To bad considering the crappy battery life so its not like you can charge some other way and swap the battery around.
Example, I have a bricked unit that charges but doesn't otherwise work, so I mean using my bricked board to charge it and the non charge board for use. The a100 isn't really a good setup for swapping around lol. I may actually be interested in that board now that I think about it...
Tapatalked from my HTC DNA - ReVolt
hmmm an idea for the brave
pio_masaki said:
To bad considering the crappy battery life so its not like you can charge some other way and swap the battery around.
Example, I have a bricked unit that charges but doesn't otherwise work, so I mean using my bricked board to charge it and the non charge board for use. The a100 isn't really a good setup for swapping around lol. I may actually be interested in that board now that I think about it...
Tapatalked from my HTC DNA - ReVolt
Click to expand...
Click to collapse
If I could figure out a way to charge the battery OTHER than through the board - I would! Which got me to thinking. One COULD get a second rear panel, cut a door in it, install teensy weensy hinges or create a hinge with cloth tape. then make some sort of extension cord for the battery charging cord, plug it in to the "external" charging board and refill the battery that way.
With a working board and the right know how, one could just extract the board, put it in a box and make a charger out of it too.
But that is just my brain rattling around ideas. :silly: Hopefully this new "refurbished" mother board will do the trick and I will learn my lesson and NEVER let a sales "tech" attempt trial adapters! at 10 minutes to 9pm tonight it was in Texas....
Until I CANNOT use it, I didn't realize how MUCH I used this little tablet!
now it blinks orange?
Oh fer cryin out loud! The motherboard has arrived, I have installed it. Can plug n the charger and drop it onto the docking station and now I get the same response for both charging options: Charge LED lights up orange solid for just about 60 seconds, then begins blinking. Device doesn't respond when power button is pushed UNLESS it is plugged in, and then it just sits at the "ACER" screen.led changes to blue.
OK, wait a minute, this is the third time I have turned it on while plugged in. Acer screen has moved to Android, Device has started. Battery icon showing a question mark. 23%
Turned off, turned back on, now battery shows only 3%????
Think I saw something on the forums about that. will go on a quest.
Finally charging again!
Shhh, don't want to disturb my device....
Found folks on other forums with similar issues of the Acer A100 tablet showing only 3% charge. I removed and inserted the charging pin several times, the device would show solid orange led for about one minute then start blinking. Turned the device on when charger plugged in, unlocked the screen, then with device still plugged in I shut it down completely. Removed charger. Plugged it back in and so far the led is staying at solid orange.
Please keep your fingers crossed for me! This has been quite the roller coaster ride of discovery. Will leave it be for overnight (what is left of the overnight). Then peek at it in the morning. With any luck at all it will have accepted a full charge and I will be greeted with a functioning device! I almost want to learn a new trade..
well now that is weird, got up this morning to a nice blue charge indicator. Yay! Unplugged charger, press on button, hold, hold, hold, hold, hold and device does not start up. Dang it! Plugged it back in, led went solid orange, then started blinking again! Pressed and held on button. Device came on. battery meter shows 3% and a question mark! HUH?
have device plugged in, settings of course show android version 3.2.1 for this motherboard. Guess I need to upgrade it to ICS maybe that will resolve this weird battery issue? Hope soemone here has ideas, feels like I am soooo close to resolving this.
I read the upper posts.
Now I want to share my experience regarding battery load sharing:
I have allso problems to charge the battery.
I have on my tab, for example, 40% of battery power.
I turn my tab off.
When i plugged the charging cable in it shows me the orange led for load.
After two hours or more i turned the tab on.
It shows me not more than 40% but only 37% or so.
So not loaded. This was a bad sign....
I dont no was happend.
I get a little bit nervous but when the tab not get power it doesnt work....
After two/three hours the battery was empty.
Now i can only start my tab while plugged the charging cabel in because the battery will not load.
I have tried several options to find a solution (disconnect the battery, install a new battery, etc. ....).
My solution was fairly straightforward:
I open the tab. Look where the power comes in.
Of the charging socket go four (two red and two black) cable to the motherboard and from the motherboard it goes seven (two red, two black and for me not so important three other coloured cabels) to the battery.
I organized four thin wire and soldered it from the charging socket directly to the battery (of course red to red black to black ).
The result:
When i plugged the charging cabel in while android is running i get no information to load and it shows me not to.
But when i turned the tab off and on again it shows me that it has the battery charged :fingers-crossed: .
After on night while the charger plugged in the battery is fully loaded!!
And of course i get the information in android the discharging of the battery but this is an normaly thing!
So, the problem to load the battery for me is solved .
I hope it helps a little bit for everyone!
frischeis said:
I read the upper posts.
Now I want to share my experience regarding battery load sharing:
I have allso problems to charge the battery.
I have on my tab, for example, 40% of battery power.
I turn my tab off.
When i plugged the charging cable in it shows me the orange led for load.
After two hours or more i turned the tab on.
It shows me not more than 40% but only 37% or so.
So not loaded. This was a bad sign....
I dont no was happend.
I get a little bit nervous but when the tab not get power it doesnt work....
After two/three hours the battery was empty.
Now i can only start my tab while plugged the charging cabel in because the battery will not load.
I have tried several options to find a solution (disconnect the battery, install a new battery, etc. ....).
My solution was fairly straightforward:
I open the tab. Look where the power comes in.
Of the charging socket go four (two red and two black) cable to the motherboard and from the motherboard it goes seven (two red, two black and for me not so important three other coloured cabels) to the battery.
I organized four thin wire and soldered it from the charging socket directly to the battery (of course red to red black to black ).
The result:
When i plugged the charging cabel in while android is running i get no information to load and it shows me not to.
But when i turned the tab off and on again it shows me that it has the battery charged :fingers-crossed: .
After on night while the charger plugged in the battery is fully loaded!!
And of course i get the information in android the discharging of the battery but this is an normaly thing!
So, the problem to load the battery for me is solved .
I hope it helps a little bit for everyone!
Click to expand...
Click to collapse
I really hope other isn't any voltage or amperage changes needed of that can blow that battery up real quick, plus it can't stop charging, you'll need to monitor that yourself.
Thanks for the info though, it does appear to be yet another somewhat common bug these have that can be addressed by a user if they feel the need to.
Tapatalked from my HTC DNA - ReVolt
Not switch the charger off when the battery is full?
I think the charger there is a shutdown would otherwise overload the battery, right?
Or do this the motherboard?
Anyway, for me the tab is fully working now and if the battery is broken, it is not a big expense to replace them .
frischeis said:
Not switch the charger off when the battery is full?
I think the charger there is a shutdown would otherwise overload the battery, right?
Or do this the motherboard?
Anyway, for me the tab is fully working now and if the battery is broken, it is not a big expense to replace them .
Click to expand...
Click to collapse
I was saying the board is in charge of cutting the battery charge off, not the charger itself so maybe keep an eye on it, its a good way for an explosion or fire.
Tapatalked from my HTC DNA - ReVolt
A100 tablet not charging still
Frischies is much braver than I am.
Wiring the battery direct to the charging port- I would definitely worry about burning up the battery or causing a fire - especially while charging when I sleep. I have had more than my fair share of run ins with fire.
The Motherboard I ordered arrived and I installed it. It was listed as "factory refurbished", but unfortunately will not accept a charge. I thought it had charged overnight at one point, but all it does is blink orange and the battery reads 3% or 0%. Turning the device off when plugged in and doing a reset has not helped. The vendor has been gracious to do a replacement, so I will follow that route until I get a working motherboard.
I have discovered that the docking station will be a welcome addition to my Acer tablet paraphernalia! Although this model docking station isn't the one that allows HDMI throughput, it still will be nice for music, and other media. A Bluetooth keyboard and the tablet will offer yet another computer tool!
First things first though, get the tablet to accept a charge - until then it is a really wide flat paper weight! I am getting VERY adept at opening the tablet and removing the internals!
It is working again! The motherboard sent was defective but vendor issued an RMA. Received the replacement yesterday, installed it last night. Charged over night and fully functional this morning! Ahhh it feels good to have my little buddy back again. Didn't realize how much I used it, until I couldn't use it! Thanks to all for the help.
Sent from my A100 using xda app-developers app
So suddenly my note 2 running tweaked has started charging real slow then all off a sudden will not charge at all. Ive tried several chargers and now have noticed with or without the battery i can enter only download mode and it will show up on odin but not charge the battery. as soon as i try to restart instead of entering download mode it will try and start but just shut down. Does anyone have any thoughts or ideas or has seen this issue? thanks. so considering it will enter odin is it possibly a battery issue,although it will only go into download mode nothing else? thanks again
The issue is not the ROM, I can tell you that much.
I would suggest flashing the stock kernel. If that does not help the issue, you need a new battery. 100% positive. I say that because you claim you have tried other chargers.
i cant check but can anyone else confirm the phone wont work without battery in with it plugged into laptop
Rayn1328 said:
i cant check but can anyone else confirm the phone wont work without battery in with it plugged into laptop
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It doesn't. You have to have the battery in, even when plugged into a wall charger.
Sent from my SGH-T889 using xda app-developers app
kintwofan said:
It doesn't. You have to have the battery in, even when plugged into a wall charger.
Sent from my SGH-T889 using xda app-developers app
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Click to collapse
awesome i am currently only 6500 miles from home in south korea.......seems like samsung is pretty popular here. lol everyone has a note2 here i swear. gonna find a battery and hopefully it solves the issue.
I'm having a sort of similar issue.
This is a brand new issue for me. I've been rooted running Jedi X-14 for about 2 months or so now. I went on vacation to Guatemala and that's when the issues started arising. I brought along the same charger I used here back in the states, and it worked fine the first day or two, then new things started happening. It started taking about 5-10 seconds for the Note to realize the charger was plugged in. Then when the charger was plugged in the bottom of the screen (actual touch screen) started becoming a bit unresponsive and laggy. The phone no longer charged as fast as it used to. Then sometimes I would plug it in, and it wouldn't actually charge...it would make the noise recognizing something has been plugged in, but would say "Please Connect charger". If the phone completely died this was almost a guarantee and I would need to plug/unplug/plug until the dead battery icon changed into the charging battery icon.
I'm back in the states now, haven't had a chance to reset/install a new rom or anything, and my phone earlier tonight went dead. Spent a good 2 minutes fiddling with it, it eventually turned on, said no charger was inserted, and turned off. Since then I have not been able to get it on. As soon as I plug it in it shows dead battery, and very rarely it will start to boot up the battery charging symbols (battery symbol with green bar moving), but even if it did, it would do it for 1-3 seconds and shut off.
I'm able to get into Recovery Mode/Download Mode, and the phone will actually stay on as long as it's on the charger (wall outlet).
It's not the battery, as I have another official Note 2 battery (at work currently, and I switched them the other day, to see if the other battery was the issue). Also I have different USB cords/chargers, and they all give the same issue.
From CWM Recovery I was able to wipe Cache/Factory reset the phone, but it still does not boot up. Any advice is appreciated. I can probably get it on when I get my other battery which is near fully charged at work, but I won't be at work for another 2 days or so, so I'm looking for a fix so I can have a working phone in the meantime. Thanks in advance.
EDIT: I was able to charge the phone while in recovery mode to about 10%...It then turned on...after a few minutes however the charger just stopped charging the phone. Tried another charger same thing. Tried both chargers with an s3 I have, and they work perfectly fine. Even going back to recovery mode won't charge it anymore.
I was on vacation in Central America and the same thing happened to me. It works fine in the states now.
Sent from my SGH-T889 using xda app-developers app
Bkenigma said:
I'm having a sort of similar issue.
This is a brand new issue for me. I've been rooted running Jedi X-14 for about 2 months or so now. I went on vacation to Guatemala and that's when the issues started arising. I brought along the same charger I used here back in the states, and it worked fine the first day or two, then new things started happening. It started taking about 5-10 seconds for the Note to realize the charger was plugged in. Then when the charger was plugged in the bottom of the screen (actual touch screen) started becoming a bit unresponsive and laggy. The phone no longer charged as fast as it used to. Then sometimes I would plug it in, and it wouldn't actually charge...it would make the noise recognizing something has been plugged in, but would say "Please Connect charger". If the phone completely died this was almost a guarantee and I would need to plug/unplug/plug until the dead battery icon changed into the charging battery icon.
I'm back in the states now, haven't had a chance to reset/install a new rom or anything, and my phone earlier tonight went dead. Spent a good 2 minutes fiddling with it, it eventually turned on, said no charger was inserted, and turned off. Since then I have not been able to get it on. As soon as I plug it in it shows dead battery, and very rarely it will start to boot up the battery charging symbols (battery symbol with green bar moving), but even if it did, it would do it for 1-3 seconds and shut off.
I'm able to get into Recovery Mode/Download Mode, and the phone will actually stay on as long as it's on the charger (wall outlet).
It's not the battery, as I have another official Note 2 battery (at work currently, and I switched them the other day, to see if the other battery was the issue). Also I have different USB cords/chargers, and they all give the same issue.
From CWM Recovery I was able to wipe Cache/Factory reset the phone, but it still does not boot up. Any advice is appreciated. I can probably get it on when I get my other battery which is near fully charged at work, but I won't be at work for another 2 days or so, so I'm looking for a fix so I can have a working phone in the meantime. Thanks in advance.
EDIT: I was able to charge the phone while in recovery mode to about 10%...It then turned on...after a few minutes however the charger just stopped charging the phone. Tried another charger same thing. Tried both chargers with an s3 I have, and they work perfectly fine. Even going back to recovery mode won't charge it anymore.
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Click to collapse
Maybe its the oversea power grid? If you are using just a wall converter (US to Wherever) and still using your american AC adapter, you have to realize the power grids arent as clean or as constant as they are here in the states and can actually ruin an AC charger. Can you charge it via your PC using the USB cable? I know the stock Kernel has a near trickle charge though but still, it might be enough to charge it for use.
Something to keep in mind, the S3 has a lower power draw than the note 2. The screen alone on the note2 can draw more than 600Mah which is more than a standard USB adapter can output. Thats not counting the draw on the battery from cpu frequency or radios.
Also I can also assure you that bad power grounds cause a touchscreen to act up. I have an iconia a500 that acts up in the same way with a generic charger, yet, with the stock charger it works fine. It has less power filtering in its charging circuitry. I still have ungrounded outlets in my house which cause the issue. Too much interference.
Just a guess as both you and ryan are experiencing similar issues and are both away from home.
Sent from my ASUS Transformer Pad TF300T using xda app-developers app
pyraxiate said:
Maybe its the oversea power grid? If you are using just a wall converter (US to Wherever) and still using your american AC adapter, you have to realize the power grids arent as clean or as constant as they are here in the states and can actually ruin an AC charger. Can you charge it via your PC using the USB cable? I know the stock Kernel has a near trickle charge though but still, it might be enough to charge it for use.
Something to keep in mind, the S3 has a lower power draw than the note 2. The screen alone on the note2 can draw more than 600Mah which is more than a standard USB adapter can output. Thats not counting the draw on the battery from cpu frequency or radios.
Also I can also assure you that bad power grounds cause a touchscreen to act up. I have an iconia a500 that acts up in the same way with a generic charger, yet, with the stock charger it works fine. It has less power filtering in its charging circuitry. I still have ungrounded outlets in my house which cause the issue. Too much interference.
Just a guess as both you and ryan are experiencing similar issues and are both away from home.
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Click to collapse
I figured maybe my charger from the US I had brought to Guatemala had broken...when I got back to the States, I bought a Micro USB charger from one of those vending machines in the airport (says it's a 5V2 1A wall charger- 2.1A output)... Having tried different chargers, batteries and outlets, I can only assume it's something with the Hardware no? I was able to reset the phone, and installed Jedi Master 14 to replace Jedi X14, to see maybe if something with the ROM was faulty, and that didn't help.
Phone no longer charges in CWM Recovery like it did last night. Phone turns off, and has that dead battery symbol on the screen (empty battery with a loading circular icon on it). It will no longer go any further.
Tried charging thru my computer to the same effect... worst case scenario I have to do a warranty exchange, however I'd like to avoid it as I believe T-Mobile no longer offers the White Note 2 and I don't like the titanium colored one, I'd have to un-root/stock rom/Triangle Away, and then re-root new phone (I'm a complete N00b at this stuff so it's time consuming for me to do), and honestly I'd just to avoid it if at all possible.
Bkenigma said:
I figured maybe my charger from the US I had brought to Guatemala had broken...when I got back to the States, I bought a Micro USB charger from one of those vending machines in the airport (says it's a 5V2 1A wall charger- 2.1A output)... Having tried different chargers, batteries and outlets, I can only assume it's something with the Hardware no? I was able to reset the phone, and installed Jedi Master 14 to replace Jedi X14, to see maybe if something with the ROM was faulty, and that didn't help.
Phone no longer charges in CWM Recovery like it did last night. Phone turns off, and has that dead battery symbol on the screen (empty battery with a loading circular icon on it). It will no longer go any further.
Tried charging thru my computer to the same effect... worst case scenario I have to do a warranty exchange, however I'd like to avoid it as I believe T-Mobile no longer offers the White Note 2 and I don't like the titanium colored one, I'd have to un-root/stock rom/Triangle Away, and then re-root new phone (I'm a complete N00b at this stuff so it's time consuming for me to do), and honestly I'd just to avoid it if at all possible.
Click to expand...
Click to collapse
Well, its tough to say without using a multimeter and checking a few points, but, a power spike could fry the charging circuit in the phone. Thats the worst case scenario. Only thing you could do if thats the case would be to get a second battery and external charger.
Sent from my SGH-T889 using xda app-developers app
Luckily both can be gotten from eBay for under usd $20. Its probably worth checking asurion to see if they have white ones in Stock. You just have to weigh the cost of a warranty replacement the hassle of changing batteries every day.
Sent from my SGH-T889 using xda app-developers app
pyraxiate said:
Luckily both can be gotten from eBay for under usd $20. Its probably worth checking asurion to see if they have white ones in Stock. You just have to weigh the cost of a warranty replacement the hassle of changing batteries every day.
Sent from my SGH-T889 using xda app-developers app
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Click to collapse
I just experienced the same problem with my N2 over the weekend. Went to Bestbuy and got the $50 battery charger and extra battery (Check local availability) price matched to Amazon.com for $30 (with free shipping under more buying choices), brought it home to charge my completely wasted original battery and used the one in the box. Sure enough, it is the charging port. The new battery did the same thing as the old one, it showed it was being charged by the little lightning "icon" over the battery, but the battery was still draining. Although the lightning icon was there, there was no "bing-bing" tone (in the stock rom w/ root) to indicate the cable was ACTUALLY connected.
What is interesting is I think the battery icon shows up as "processing" if the USB pins are connected, but if just the +/- terminals are used in the cord (like the one that comes with the battery dock, not a MicroUSB cable -> USB port -> power adapter that comes with the phone, but power adapter -> MicroUSB) nothing registers on the phone even if it's completely powered down.
Called Tmo today and they are shipping a warranty replacement to me for free, I just have to wait for Ground shipping (didn't pay the $20 for "overnight"). Hopefully it'll come by next Wednesday, as I'm leaving on vacation then. With all this drama on the phone, I actually ended up ordering a Nokia 521 (give old WinMo a try again) from HSN over the weekend as a backup phone for $100. I felt like I was going to die not having a phone for 2 solid days.
Normally they send one out , then you return yours. The battery on this phone is phenomenal, so using an external battery charger and swapping them out would be viable while waiting for the new one to come in the mail id think.
Im hoping these phones dont get usb charging problems often. I might just mod mine to take wireless charging. My s2's microusb port died on me.
Sent from my SGH-T889 using xda app-developers app
pyraxiate said:
Normally they send one out , then you return yours. The battery on this phone is phenomenal, so using an external battery charger and swapping them out would be viable while waiting for the new one to come in the mail id think.
Im hoping these phones dont get usb charging problems often. I might just mod mine to take wireless charging. My s2's microusb port died on me.
Sent from my SGH-T889 using xda app-developers app
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Click to collapse
I'm actually quite disappointed that Tmo told Samsung to not wire up the wireless charging leads on this phone. I would be totally on-board for wireless charging a'la Nexus or my Touchpad. My Microusb connector wouldn't even see any use other than when to flash a rooted update.
I'm OK with a soldering iron, but I don't want to tear the thing apart to hook them up myself. Seems like it would be a great way to void the warranty, OR disable my Squaretrade warranty.
Just wanted to drop back by since I was about to send back my N2 to Tmo... I unrooted, triangle awayed and finally flashed "clean" firmware directly from Samsung via ODIN.... both batteries are now charging via both USB and Power adapter.
WTF
So I woke up this morning to find my Tab drained. I plugged it in for half an hour, then when I picked it up I noticed there was no charging indicator (the green liquid battery thing). So I thought maybe I didn't plug it in right. I reattached everything, tested the charger on another device, then plugged it back into the tab for about 2 hours...still no juice. I tried powering on and doing the reset thing. still nothing. I brought it to a Samsung service center and they said I have a faulty motherboard. Now I'm wondering how the hell that happened when I've been using this device for about 6 months (only 6 months) without any issues, no overheating or strange reboots or anything, and now just like that I have a motherboard issue? The kicker here is that they're charging 75% of the tablet price to fix it! What gives?! I purchased it from a non-samsung mall store so they said I can't claim warranty. I popped the back off and did the battery pull thing and tried to charge - still nothing. Did I buy a device that decided it was a lemon after 6 months light-moderate use?
Anyone else have this happen? It's never been dropped or anything and I was on stock firmware with nothing but root.
In the UK, If your tablet goes faulty in 12months your guarantee is with the place you bought it from, not Samsung.
John.
It's ALIVE! I thought I'd get a 2nd opinion on my Tab since the guys at the Samsung service center popped it open anyway. Went to a generic phone repair store, all they did was hook it up to this box thing, and it came back to life! The guy said something got corrupted and just re flashed everything to stock rooted. He charged me less than $20 and I have a working Tab again. Obviously the very first thing I did with my resurrected device was to call Samsung's hotline and report how this one service center was trying to scam me into buying a motherboard that cost nearly as much as what I paid for the thing brand new.
Some li-poly battery have an protection circuit built in, if the voltage falls below a certain level say 2.5volts per cell, it disables the battery, if you connect an meter to the battery you will get 0volts , you need an li-ion charger that passes an higher voltage that resets the battery and allows it to work again, I wonder if this is what happened.
http://batteryuniversity.com/learn/article/low_voltage_cut_off
John.
Did they connect via USB or to the motherboard?
@tinderbox could be...must have over-drained itself for some reason.
@ashyx I couldn't really see what he was doing since his work table was obstructed by a bunch of stuff and he had his back towards me, I just saw him grab this small black box, then minutes later he showed me that the tab was already powering on though couldn't get past samsung logo, then he went ahead and flashed to stock.
Reason I ask is I wonder if he used a jtag box to ressurect it by reflashing the bootloader.
If he did there must be jtag points on the board as it can't usually be done via USB.
Pity you didn't ask what he actually did as I'm intrigued now.
Did the box look like this: riff box
ashyx said:
Reason I ask is I wonder if he used a jtag box to ressurect it by reflashing the bootloader.
If he did there must be jtag points on the board as it can't usually be done via USB.
Pity you didn't ask what he actually did as I'm intrigued now.
Did the box look like this: riff box
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Click to collapse
Yes! but without the markings.:good:
pawces said:
Yes! but without the markings.:good:
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Exactly the same or just similar?
yeah i think so... it had similar ports, though not sure about the outer shell of it... i think it was smooth all around with no ridges or anything, just a little black rectangular box.
Sorry to revive an old topic, but i thought i'd do an update instead of start a new one. Tab S died again and I'm now convinced it's over-discharge, as I left it at about 20% and forgot to plug it in before going to bed. Woke up with the tab drained, not responding to any button combinations, not charging with any of my chargers that tested ok with other devices.
Instead of bringing it back to the technician, I thought I'd try mcguyvering the damn thing. I opened up the back, pried the battery terminals up off the board, lifted the battery out, and with a spliced USB cord hooked up to a powerbank, I gave the battery terminals a direct zap, inserting the exposed USB wires into the battery terminals. This took some trial and error as, I didn't know which wire was supposed to go where, but finally I saw the powerbank leds blink, indicating it was discharging into something. I held the wires in place for about 5-10 minutes, noticing some heat on the battery by then. I reinstalled the battery back into the tablet, closed everything up and tried charging again and...hey presto! the tab started charging. :victory: Let it charge for 2 hours and powered on like nothing happened.
disclaimer:
I don't recommend you defibrillate your device's battery unless you know exactly what you're doing and are fully aware of the risks. (I didn't know what I was doing at the time but I was so frustrated at that point I didn't mind if the battery blew up in my face.)
Mine just dead last night while CHARGING (turned off at 13%).....
And refused to turn on till now (still charging and both warm (charger + tab)...
I even plugged an ampere meter to really know if its drawing any or not (it is, at 5.2V 1.7A for 15mins)...
And still no luck
Samsung's device become more ****ty each generations..... Esp the battery...
This one is the replacement batt they gave me after 2mos of usage for infamous Tab S battery issue...
I saw a video on youtube, a guy had a dead 10.5" T1 he took the back off and connected an 1amp microusb charger pcb to connections directly to the battery under a piece a tape, I bought a couple of the microusb charger pcb`s from ebay for 0.42p each in case mine goes dead.
EDIT: I found the video.
https://www.youtube.com/watch?v=BRTgLGrzNz0
John.
pawces said:
Sorry to revive an old topic, but i thought i'd do an update instead of start a new one. Tab S died again and I'm now convinced it's over-discharge, as I left it at about 20% and forgot to plug it in before going to bed. Woke up with the tab drained, not responding to any button combinations, not charging with any of my chargers that tested ok with other devices.
Instead of bringing it back to the technician, I thought I'd try mcguyvering the damn thing. I opened up the back, pried the battery terminals up off the board, lifted the battery out, and with a spliced USB cord hooked up to a powerbank, I gave the battery terminals a direct zap, inserting the exposed USB wires into the battery terminals. This took some trial and error as, I didn't know which wire was supposed to go where, but finally I saw the powerbank leds blink, indicating it was discharging into something. I held the wires in place for about 5-10 minutes, noticing some heat on the battery by then. I reinstalled the battery back into the tablet, closed everything up and tried charging again and...hey presto! the tab started charging. :victory: Let it charge for 2 hours and powered on like nothing happened.
disclaimer:
I don't recommend you defibrillate your device's battery unless you know exactly what you're doing and are fully aware of the risks. (I didn't know what I was doing at the time but I was so frustrated at that point I didn't mind if the battery blew up in my face.)
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Crescendo Xenomorph said:
And still no luck
Samsung's device become more ****ty each generations..... Esp the battery...
This one is the replacement batt they gave me after 2mos of usage for infamous Tab S battery issue...
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Samsung tablets only have issue with battery connectors. The white connector with 6 wires has loose connection, the black connector soldered to mainboard has cracked solder joints. New battery won't solve problem if you don't fix these two flaws. Resolder the battery connector will fix most of problems: not charging, reboot, flickering, auto shutdown.
I posted more details in the threat: flickering screen.
so the problem is Samdung's QC....
anyway no more somedung, I switched to Xiaomi Mi Mix, still preordering from China.....
You have to watch these chinies owened tablet and phone manufactues, they have been found to come with built in spyware, sending copys of all your texts ect back to china, it`s been in the news that last few day`s
Lenovo notebooks had a spyware app and Lenovo had to issue insturctions on hot to remove it once it was found.
John.
Crescendo Xenomorph said:
so the problem is Samdung's QC....
anyway no more somedung, I switched to Xiaomi Mi Mix, still preordering from China.....
Click to expand...
Click to collapse
That's OK, I can scan and remove all those spyware.
Still its better to have it properly supported with actual updates (older phone still got all UI + android update, hello MIUI 8).
Rather than using phone without proper software support....
Tab S - buggy and prolly the last MM update
Note 3 - useless LL update, very unstable, consider alpha
Note 8.0 - buggy last KK update, switched to CM13 and happy with it
So I know all about the problems associated with the Nexus 7's battery draining too far and getting stuck in a type of "deep sleep" that you have to jump through some hoops to get it out of. It happened to me once, and I got it to come back. The other day I'd left it off the charger too long and it died again. This time, nothing I did brought it back. I figured maybe after 4 years, the battery was just officially toast, so I ordered a new one and just finished putting it in. And...
Nothing.
It still won't turn on. No combination of holding buttons down together, or for 10 or 30 seconds makes any difference. No charging indication when I plug it in. Solder points on the USB plug looked fine, and the cord itself charges other things no trouble. Tried a different cord just to be sure even. Just to be on the safe side I even tried a wireless Qi charging pad.
Has anyone else ran into this sleep of death issue? Anything else worth trying on it? It was fine when I put it on the shelf a few days ago, and it hadn't moved since.
TheQuicksilver said:
I ordered a new one and just finished putting it in. And...Nothing.
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The new battery may be as old as your N7 and after years in storage LiPos can completely deteriorate. Please check its voltage measured between pins 1 and 6. If it is below 3V, the battery is useless.
Regardless of battery's condition, let's check if your N7 is OK:
connect it to a PC
press all the 3 buttons for 1 sec
check Windows device manager or Linux lsusb for a new device VID_05C6&PID_9008
The new device appears even if there is no battery connected.
I guess I just took for granted that the batteries were something being made aftermarket, rather than NOS. I'll take it back apart later to check the voltage. FWIW, I left it on the Qi pad overnight thinking that might "trickle charge" it, and the device was warm on back, so it was at least making an effort to do something (assuming the induction itself doesn't cause some heat regardless of whether or not it gets to the battery, which is probably the case).
Anyway, to your steps, I didn't notice it doing anything when hooked to the computer and the buttons pushed. No familiar USB ding, nothing changed in device manager. So, it sounds like that implies something else decided to go wrong. Poor old thing. She lived a good life. She will have a Viking funeral.