is there anyone with problems charging the t320?
it goes fine until 40%, above that or stops charging or is really slow, like 1% in one hour.
i thought it was a rom issue, so i flashed the original rom from sammobile
the charging at this moment is 56%, 150mA average, when isn't negative - 200
this is stock usb and charger, and also with other charger/cable is the same
Me too
monteiro-ribas said:
is there anyone with problems charging the t320?
it goes fine until 40%, above that or stops charging or is really slow, like 1% in one hour.
i thought it was a rom issue, so i flashed the original rom from sammobile
the charging at this moment is 56%, 150mA average, when isn't negative - 200
this is stock usb and charger, and also with other charger/cable is the same
Click to expand...
Click to collapse
I was just searching the forums as bought mine yesterday and have a similar problem, mine got to 56% then stopped charging. If i turn off the tablet it does start to charge again so will fully charge with it powered down and see what happens.
soon i'll be testing another charger
you can see the charging voltage on the galaxy charging current available on playstore
most likely i will use warranty
monteiro-ribas said:
soon i'll be testing another charger
you can see the charging voltage on the galaxy charging current available on playstore
most likely i will use warranty
Click to expand...
Click to collapse
@tidy01
Pop the back off gently and disconnect the battery from the main board. When you reconnect it, let it charge up fully before turning it back on. After this, it will behave normally for the rest of time.
Thanks
dottat said:
@tidy01
Pop the back off gently and disconnect the battery from the main board. When you reconnect it, let it charge up fully before turning it back on. After this, it will behave normally for the rest of time.
Click to expand...
Click to collapse
Thanks for the reply but it seems my issue was caused by a faulty outlet socket. The socket works fine for everything else but would only charge the tablet when it was powered down. Tried charging off my laptop and desktop usb and it was the same, but tried some other outlet sockets and they charge fine. I understand the usb outlets might not provide enough to charge the tablet but hadn't considered the socket as I know it works, must be just enough high resistance to prevent it charging a working tablet but provides enough current to charge it when it's powered down. The fact it was showing a 56% charge was just co-incidence.
Thought it might be worth posting this as it's not something I've come across before.
tidy01 said:
Thanks for the reply but it seems my issue was caused by a faulty outlet socket. The socket works fine for everything else but would only charge the tablet when it was powered down. Tried charging off my laptop and desktop usb and it was the same, but tried some other outlet sockets and they charge fine. I understand the usb outlets might not provide enough to charge the tablet but hadn't considered the socket as I know it works, must be just enough high resistance to prevent it charging a working tablet but provides enough current to charge it when it's powered down. The fact it was showing a 56% charge was just co-incidence.
Thought it might be worth posting this as it's not something I've come across before.
Click to expand...
Click to collapse
Here's the thing. When mine was misbehaving I could get it to start charging again by switching outlets or even reversing polarity on the wall plug. It was a temporary fix as within days the problem would be back. I thought I had it fixed so many times. It always came back. If it happens to you again just remember the above post. It's been four months since I did it and never once has it been quirky. Something in the hardware needed reset that only disconnecting the battery could do.
dottat said:
Here's the thing. When mine was misbehaving I could get it to start charging again by switching outlets or even reversing polarity on the wall plug. It was a temporary fix as within days the problem would be back. I thought I had it fixed so many times. It always came back. If it happens to you again just remember the above post. It's been four months since I did it and never once has it been quirky. Something in the hardware needed reset that only disconnecting the battery could do.
Click to expand...
Click to collapse
Thanks once again, I will keep this in mind if does happen again.
dottat said:
@tidy01
Pop the back off gently and disconnect the battery from the main board. When you reconnect it, let it charge up fully before turning it back on. After this, it will behave normally for the rest of time.
Click to expand...
Click to collapse
Hi, I have this problem also, as well as random reboots. I just want to ask you on how to take the back off of the Tab Pro 8.4?
Cheers
Zakanam said:
Hi, I have this problem also, as well as random reboots. I just want to ask you on how to take the back off of the Tab Pro 8.4?
Cheers
Click to expand...
Click to collapse
Very gently use something like a guitar pick or a credit card to pry it up around the edges
dottat said:
Very gently use something like a guitar pick or a credit card to pry it up around the edges
Click to expand...
Click to collapse
Thanks for your reply. Would you pry the back faux leather cover from the back, or from the front via the glass screen (like in note 10.1 2014)?
I wouldn't want to break my tab he he thanks
Zakanam said:
Thanks for your reply. Would you pry the back faux leather cover from the back, or from the front via the glass screen (like in note 10.1 2014)?
I wouldn't want to break my tab he he thanks
Click to expand...
Click to collapse
It's the faux leather thing you pry off. Keep the angle that you pull on the cover shallow and work it slowly.
dottat said:
It's the faux leather thing you pry off. Keep the angle that you pull on the cover shallow and work it slowly.
Click to expand...
Click to collapse
with no other solution i did too pop the back off gently and disconnect the battery from the main board, now it's working OK, let's see how long
cabel pull
hoping this works. I just filled out a warranty email today for same issue on 12.2 Tab Pro. It pried the case open with a credit card. Very slow, took about 7 minutes. Pulling the power cable in the middle, probably behind green tape. Use needle nose pliers or something small behind the wires and pull up. The pins are tiny and will f*ck the whole thing up if bent.
I get the feeling that the screen turns itself on even when eye tracking settings are off or closed in case. I hear the annoying sound at night when charging. Why Sammy does not have a smart current sensor built in is insane. Asking you to unplug when most people will leave on and charge overnight. Just dumb.
I can't get past 57% charging for last 2 weeks. Stock, unrooted for first time in a long time, so I am pissed to hear ROM had not effect. This is likely undocumented hardware issue Sammy doesn't want to admit to.
even on my T325 I had the same problem but I solved it this way ...
I have worn the battery completely until turn off my device, I loaded the battery overnight to device OFF.
wipe and install rom custom samsung
I launched and used app "battery calibraton" (root)
I have now done 4 cycles of charging to 1600/1750 mA
house66 said:
even on my T325 I had the same problem but I solved it this way ...
I have worn the battery completely until turn off my device, I loaded the battery overnight to device OFF.
wipe and install rom custom samsung
I launched and used app "battery calibraton" (root)
I have now done 4 cycles of charging to 1600/1750 mA
Click to expand...
Click to collapse
The battery "unplug" works....
monteiro-ribas said:
with no other solution i did too pop the back off gently and disconnect the battery from the main board, now it's working OK, let's see how long
Click to expand...
Click to collapse
Still good?
mgp53 said:
The battery "unplug" works....
Click to expand...
Click to collapse
There is no need for physical interventions on the hardware, maybe someone does not know in depth the behavior of lithium ions
house66 said:
There is no need for physical interventions on the hardware, maybe someone does not know in depth the behavior of lithium ions
Click to expand...
Click to collapse
Perhaps not, but I and MANY others have encountered the same problem. Across multiple Roms, fully discharging and recharging, running the so called calibration apps. Rebooting, unpluggin, replugging. The problem NEVER fully went away. It would work for a charge cycle or two or three, then would reappear.
I finally took the back off, unplugged and replugged the connector., closed up the case, charged it for several hours before turning it back on.
Not ONCE has the problem occurred since that intervention. That was over a month ago.
Maybe it's not lithium ion behavior, it might be in the charging circuit and hardware.
If you have a suggestion, then by all means share it so others can solve their problem.
mgp53 said:
Perhaps not, but I and MANY others have encountered the same problem. Across multiple Roms, fully discharging and recharging, running the so called calibration apps. Rebooting, unpluggin, replugging. The problem NEVER fully went away. It would work for a charge cycle or two or three, then would reappear.
I finally took the back off, unplugged and replugged the connector., closed up the case, charged it for several hours before turning it back on.
Not ONCE has the problem occurred since that intervention. That was over a month ago.
Maybe it's not lithium ion behavior, it might be in the charging circuit and hardware.
If you have a suggestion, then by all means share it so others can solve their problem.
Click to expand...
Click to collapse
I've already written how I solved the problem, but in 5 years and dozens of Android rom installed on various devices, this problem for me was very frequent.
Always the same. On my ST325 I solved like other times in the past.
No news I found on this battery, battery charger of the same problems since I know Android
*mgp53
sorry for my bad English ...
for this device I've tried all the roms available (CM11 or not)
the problem is very acute especially after CM11> Pro Plus V2, but the problems had already occurred some time with the various installations buil CM11
about a week I did the operation described above (already done in the past even on my previous samsung device, Note 1, Galaxy s4, Galaxy Mega, Galaxy tab 3 g3 ) with the same result ...
The battery charges very quickly with the device ON to 1700 mA (monitored with "Monitor battery widgwt pro")
again sorry for my english
Related
I don't know how to go about this, because, to my knowledge, its not effecting the phone in any way. Maybe a little drain, but that could be 4.2's problem. But regardless, my phone is always "on charge" no matter where I am. On any ROM this happens, so I know its a physical thing. I've been told that you can use a knife to push the contact up a little, but that only works until I plug it back in the next day. So...... Any thoughts on how to fix this without replacing the charging port? (To my knowledge, that involves soldering very small parts.)
jcoinster said:
I don't know how to go about this, because, to my knowledge, its not effecting the phone in any way. Maybe a little drain, but that could be 4.2's problem. But regardless, my phone is always "on charge" no matter where I am. On any ROM this happens, so I know its a physical thing. I've been told that you can use a knife to push the contact up a little, but that only works until I plug it back in the next day. So...... Any thoughts on how to fix this without replacing the charging port? (To my knowledge, that involves soldering very small parts.)
Click to expand...
Click to collapse
Well if it worked by bending the contacts up but goes back when you plug it in. Have you tried a different cable? Also have you cleaned out your charging port?
(Phone side and cable side)
Sent from my SPH-D710 using xda premium
g_ding84 said:
Well if it worked by bending the contacts up but goes back when you plug it in. Have you tried a different cable? Also have you cleaned out your charging port?
(Phone side and cable side)
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
I already tried clearing the ports and I tried other wires. Hell. I dont even charge my phone using a wire! I charge them using a battery charger.
Corrosion on charge port can cause this as did happen to mine
Sent from an Apple killing JellyBean
moparfreak426 said:
Corrosion on charge port can cause this as did happen to mine
Sent from an Apple killing JellyBean
Click to expand...
Click to collapse
Agreed. At this point you could be having issues where you can't see it, such as where the port is connected to the board.
Had to take port completely off before i noticed... Sprayed with acid (not recommended) and cleaned it, rinsed it, soldered back in place = good to go..... For now
Sent from an Apple killing JellyBean
jcoinster said:
I don't know how to go about this, because, to my knowledge, its not effecting the phone in any way. Maybe a little drain, but that could be 4.2's problem. But regardless, my phone is always "on charge" no matter where I am. On any ROM this happens, so I know its a physical thing. I've been told that you can use a knife to push the contact up a little, but that only works until I plug it back in the next day. So...... Any thoughts on how to fix this without replacing the charging port? (To my knowledge, that involves soldering very small parts.)
Click to expand...
Click to collapse
If you need to repair it go the this site. http://mobiletechvideos.mybigcommerce.com/samsung-epic-4g-touch-usb-port-repair/
You send it to them and they will fix it.
Turn around time is normally 5 to 7 days.
I mean. I guess i'll use it until it breaks. And even then, I use an external battery charger. So. Yeah....
Yeah i fixed mine.... I always end up fixing all my electronic problems... But i lost my charger so i still use a battery wall charger... Used my brothers charger to test my fix
Sent from an Apple killing JellyBean
Hi jeep, i have a similar problem but i'm not sure it's the same, i happened a few days ago when myi changed the battery and pugged in the charger, i noticed there was something strange, the phone's screen showed the battery was charging before i pugged in back (just when i placed the new battery). Now it behaves as it's always plugged in charging just when placing the battery in, the phones is turned off and the screen shows charging battery icon (i've tried 2 more batteries), and also there's no usb connection to the PC either.
It's a very bothering problem, the phons won't go into deep sleep, and the screen goes to the screensaver all the time (as it where pugged in charging)...
I always repair my own electronics, months ago i replaced the power button, do you think it could be a bootloader issue or just the micro-usb port?; when you fixed yours, do you think i should take it completely off and resolder?
Any advice will be really appreciated!!
Thanks
moparfreak426 said:
Yeah i fixed mine.... I always end up fixing all my electronic problems... But i lost my charger so i still use a battery wall charger... Used my brothers charger to test my fix
Sent from an Apple killing JellyBean
Click to expand...
Click to collapse
Hi, i have a similar problem but i'm not sure it's the same, i happened a few days ago when myi changed the battery and pugged in the charger, i noticed there was something strange, the phone's screen showed the battery was charging before i pugged in back (just when i placed the new battery). Now it behaves as it's always plugged in charging just when placing the battery in, the phones is turned off and the screen shows charging battery icon (i've tried 2 more batteries), and also there's no usb connection to the PC either.
It's a very bothering problem, the phons won't go into deep sleep, and the screen goes to the screensaver all the time (as it where pugged in charging)...
I always repair my own electronics, months ago i replaced the power button, do you think it could be a bootloader issue or just the micro-usb port?; when you fixed yours, do you think i should take it completely off and resolder?
Any advice will be really appreciated!!
Thanks
Hello:
My Tab Pro 8.4 has picked up an issue - it stops charging at 89%. Battery monitor - the one built in, as well as GSAM Battery monitor - show the charging increasing charge in a linear fashion to some 85%, then the rate gradually decreases, till the curve flattens at 89%. The phone still claims that the battery is charging.
I just discharged the phone fully, let it recharge - same behavior.
I did root the phone 2 days before, I wonder, if that has something to do with it.
Thanks for any info, Paul.
paulcc said:
Hello:
My Tab Pro 8.4 has picked up an issue - it stops charging at 89%. Battery monitor - the one built in, as well as GSAM Battery monitor - show the charging increasing charge in a linear fashion to some 85%, then the rate gradually decreases, till the curve flattens at 89%. The phone still claims that the battery is charging.
I just discharged the phone fully, let it recharge - same behavior.
I did root the phone 2 days before, I wonder, if that has something to do with it.
Thanks for any info, Paul.
Click to expand...
Click to collapse
Hello,
maybe you need to recalibrate your battery. This can be done by deleting batterystats.bin. Search google play, there are some apps, that can do it.
Rutr said:
Hello,
maybe you need to recalibrate your battery. This can be done by deleting batterystats.bin. Search google play, there are some apps, that can do it.
Click to expand...
Click to collapse
Thanks for the info.
In desperation, I tried few things - first a Nandroid restore to the state just after rooting - that did not help.
Next I performed a hard reset. That fixed the problem for now.
I will carefully put back in the xposed modules I used, an see/hope that the problem does not come back.
Paul.
paulcc said:
Thanks for the info.
In desperation, I tried few things - first a Nandroid restore to the state just after rooting - that did not help.
Next I performed a hard reset. That fixed the problem for now.
I will carefully put back in the xposed modules I used, an see/hope that the problem does not come back.
Paul.
Click to expand...
Click to collapse
Glad to hear that. Thanks for info.
Hi,
Did you find the actual cause of this?
I have a stock 8.4, non rooted and I find the same thing, I have attached a screen shot of the battery charge and dream. ...
Can anyone help with this please, the battery is bad enough without it topping off at 89%!!
Cheers,
Ian
Hi,
Has anyone else had this issue?
I let my tab run down to a dead battery, plugged it on over night and it is still only at 87% ...
Its driving me nuts!
I am not rooted, so don't see bow it's anything I have done, any ideas?!;
Thanks in advance
ianuk said:
Hi,
Has anyone else had this issue?
I let my tab run down to a dead battery, plugged it on over night and it is still only at 87% ...
Its driving me nuts!
I am not rooted, so don't see bow it's anything I have done, any ideas?!;
Thanks in advance
Click to expand...
Click to collapse
I do not have an answer, but I wanted to thank you for posting - your answer seems to indicate, that this is a issue not related to rooting.
While dealing with this, I have put back the stock rom ( but still with custom recovery on the device ) - which made charging work to 100%, then rooted again. With this config the charging worked for few days to 100%, till if failed again all of a sudden, getting stuck at 91% charge, and claiming, that the charging was ongoing for may hours.
While the charging was broken, I put on the CleanROM 1.0, and that fixed the charging problem again.
I do not see a clear pattern of this failure....
Paul.
Rutr said:
maybe you need to recalibrate your battery. This can be done by deleting batterystats.bin. Search google play, there are some apps, that can do it.
Click to expand...
Click to collapse
This does not "calibrate" anything. Any app that claims to fix the battery meter by wiping this file, is making a bogus claim. All the batterystats.bin files does, is indicate how much battery various apps/processes are using since the last charge. The file gets wiped ever time you connect the charger:
http://www.xda-developers.com/android/google-engineer-debunks-myth-wiping-battery-stats-does-not-improve-battery-life/
What you want, is to reset the "high" and "low" voltage flags related to Smart Battery. If there is an app that can do that, it might resolve your issue. Flashing a ROM also resets the flags (why you always need to do a battery charge/discharge cycle to get accurate readings every time you flash a ROM). So you might flash the ROM you are already on (stock?) and see if that helps.
But the issue itself is odd. If a higher voltage is achieved, I believe the "high" flag should automatically be reset. I shouldn't just "stop" at 89%.
Yes, I have (had) the same problem. I would use the tab through the day, then plug it in. In the morning, it would almost always be around 89...sometimes a bit more, others a bit less. I loaded battery doctor from the play store and set up a widget to kill all but a few specified apps (yeah, I typically try to avoid task killers, but this was driving me crazy). In my case, when I killed the apps, the battery would finish charging.
Theory (take it with a grain of salt as your mileage may vary): either the charger I am using or the tab has 'intelligence' that slows the charging down when it nears full, possibly to protect the battery. Certain apps running (sleeping?) in the background seem to keep the tab perpetually in a near-full charge state -- just enough of a drain to balance the 'slowing' charge. Every time I have killed the apps, the tab has quickly finished charging.
Again, this is just my experience. YMMV Good luck.
Try running the battery down to below 20% then recharge it. That should recalibrate the battery monitor.
Sent from my SM-T900 using XDA Premium 4 mobile app
I've been having issues with my 8.4 stopping charging only midway to 100%. If I unplug the cable and replug it, it continues charging.
Civuck said:
I've been having issues with my 8.4 stopping charging only midway to 100%. If I unplug the cable and replug it, it continues charging.
Click to expand...
Click to collapse
i have had the exact same issue , mine stops charging at 54% , need to unplug replug and then it starts charging back again, also from 78% it jumped straight to 100, something is really wrong , how could samsung break something so simple and basic
I've got a very similar problem. It stops charging, usually at something like 40 or 50. If I restart it will continue charging, but not all the way, maybe up to 70 or 80. I think I tried just disconnecting the charger and reconnecting it and it didn't work but I'll try it again as that would be easier than restarting...
I sent it for service and after weeks of back and forth they gave me the old "it's rooted, so it's out of warranty".
F U Samsung. This piece of **** tablet has been messed up since day 1. First with the over sensitive screen and now this. Sony FTW.
omarrabbat said:
I've got a very similar problem. It stops charging, usually at something like 40 or 50. If I restart it will continue charging, but not all the way, maybe up to 70 or 80. I think I tried just disconnecting the charger and reconnecting it and it didn't work but I'll try it again as that would be easier than restarting...
I sent it for service and after weeks of back and forth they gave me the old "it's rooted, so it's out of warranty".
F U Samsung. This piece of **** tablet has been messed up since day 1. First with the over sensitive screen and now this. Sony FTW.
Click to expand...
Click to collapse
You need to unplug the battery under the rear cover. Then plug it back in and boot up and charge it. Only way to fix. I never had issues again after doing that.
dottat said:
You need to unplug the battery under the rear cover. Then plug it back in and boot up and charge it. Only way to fix. I never had issues again after doing that.
Click to expand...
Click to collapse
Thanks for that advice! How can I remove the rear cover? I'm afraid I'll damage it if I just brute force it open.
omarrabbat said:
Thanks for that advice! How can I remove the rear cover? I'm afraid I'll damage it if I just brute force it open.
Click to expand...
Click to collapse
Gently with something similar to a guitar pick. Once its started just gently go along the edge.
omarrabbat said:
Thanks for that advice! How can I remove the rear cover? I'm afraid I'll damage it if I just brute force it open.
Click to expand...
Click to collapse
Did you try it already, and if so, did it work..?
HELP
Sicron said:
Did you try it already, and if so, did it work..?
Click to expand...
Click to collapse
Can you please take a picture of the procedure or make a short vid please? You open in from the rear (on the fake leather) of from the front( screens bezel) ?
I have the same problem with my SM-T325 , i've tried everything on forums : reset, hard reset( vol menu button power button) nothing works !
Thanks !
Ps: I'm using genuine 2A white charger and even tried with Asus Nexus 7 charger 2A( ridiculously is that it works better than with the genuine samsung, the white one needs 5 unplug/plugs, with Asus Black charger only 3 unplug/plugs )
cristi_pitbull said:
Can you please take a picture of the procedure or make a short vid please? You open in from the rear (on the fake leather) of from the front( screens bezel) ?
I have the same problem with my SM-T325 , i've tried everything on forums : reset, hard reset( vol menu button power button) nothing works !
Thanks !
Ps: I'm using genuine 2A white charger and even tried with Asus Nexus 7 charger 2A( ridiculously is that it works better than with the genuine samsung, the white one needs 5 unplug/plugs, with Asus Black charger only 3 unplug/plugs )
Click to expand...
Click to collapse
My battery has the same issue. I'm going to start charging my Tab Pro 8.4 with a lower amp/volt charger. I think the 5.3 volts & 2 amps puts stress on the internal charging / battery regulator circuit. The 5.3 volt makes the usb cable in the tablet reasonably hot to the touch. (a hunch)
Galaxy Tab Pro 8.4 Battery Replacement Video
Update: I scraped the 5.3 volt charger for a standard 5 volt charger @ 2 amps. It won't charge while in use but it does charge to 100% from 5%, powered off overnight. I also tested a 5 volt 1 amp charger (while slower) did charge from ~50% to 100%.
I would like to see others test this theory out.
Would also like to note, I believe Samsung included a 5.3V charger instead of a standard 5V so the tablet is able to charge while in use. My guess is the circuitry was originally designed for the standard 5 volts but once they saw the tablet's charge rate while on, they decided to throw in a different charger to make up for their mistake instead of a more reliable circuit design to handle the volt boost. More then likely they did tests to see if the tablet was able to handle the new charger but did not conduct the experiment for enough time to see the degrading results (faulty battery level readout).
If they knew of the issue in production they could have fixed the issue in a batch revision or recall or they flat out ignored the results and are in denial. Shame on Samsung if this is the case. Funny how they released the "better"("revision") Tab S while refusing to fix the Tab Pro. Now it seems to be biting them in the ass.
I still want to completely test this theory out and give it more time, but so far my assumption is seemingly correct.
cristi_pitbull said:
Can you please take a picture of the procedure or make a short vid please? You open in from the rear (on the fake leather) of from the front( screens bezel) ?
I have the same problem with my SM-T325 , i've tried everything on forums : reset, hard reset( vol menu button power button) nothing works !
Thanks !
Ps: I'm using genuine 2A white charger and even tried with Asus Nexus 7 charger 2A( ridiculously is that it works better than with the genuine samsung, the white one needs 5 unplug/plugs, with Asus Black charger only 3 unplug/plugs )
Click to expand...
Click to collapse
I had another interesting experience with this tablet.... it charged 100% without notice that the battery is full(I saw this tiny little detail -battery full icon- ensures that it is really charged) restarted it to verify something and shock !!! the value dropped to 62% and the charging sequence stopped ...and even if it shows "charging" while I'm typing these lines, it dropped to 59% ). **** !!!
Okay, this is a weird one that I researched and researched on the web. I think the problem is somehow related to the USB port. It would seem that my handset thinks it is always charging. I should qualify that statement by saying that with the handset unplugged from the charger and checking the SETTINGS > BATTERY stats it says "0 seconds on the battery" presumably meaning that the handset thinks it has a freshly charged battery and no time has expired since removal of the charger. However, it knows it isn't charging because it also says "89% Not charging". The other weird thing is the handset doesn't screen timeout when unplugged from the charger. That is, I have to hit the lock button to turn the screen off otherwise the 15 second delay doesn't work. I've also checked the developer settings to verify it isn't set to force the screen to stay on. However, the 15 second screen timeout delay works perfectly when the handset is plugged into the charger. After 15 seconds the screen shuts off and the red LED charging light comes on. Lastly, with the handset sitting idle with the screen black if I receive a phone call or text message but just leave the handset sitting there the screen lights up but it never times out after 15 seconds.
Any ideas if this is a USB port problem. I know it sounds like a firmware problem but I've checked just about everything you can think of. I've gone as far as to root my phone, backup all my stuff, then re-flash JellyBean. Speaking of USB port. Has anyone changed one out on a S2 Epic Touch 4G? I know that other S2's have a USB flex cable assembly but I can't seem to find one for this particular handset.
SyberTiger said:
Okay, this is a weird one that I research and research on the web. I think the problem is somehow related to the USB port. It would seem that my handset thinks it is always charging. I should qualify that statement by saying that with the handset unplugged from the charger and checking the SETTINGS > BATTERY stats it says "0 seconds on the battery" presumably meaning that the handset thinks it has a freshly charged battery and no time has expired since removal of the charger. However, it knows it isn't charging because it also says "89% Not charging". The other weird thing is the handset doesn't screen timeout when unplugged from the charger. That is, I have to hit the lock button to turn the screen off otherwise the 15 second delay doesn't work. I've also checked the developer settings to verify it isn't set to force the screen to stay on. However, the 15 second screen timeout delay works perfectly when the handset is plugged into the charger. After 15 seconds the screen shuts off and the red LED charging light comes on. Lastly, with the handset sitting idle with the screen black if I receive a phone call or text message but just leave the handset sitting there the screen lights up but it never times out after 15 seconds.
Any ideas if this is a USB port problem. I know it sounds like a firmware problem but I've checked just about everything you can think of. I've gone as far as to root my phone, backup all my stuff, then re-flash JellyBean. Speaking of USB port. Has anyone changed one out on a S2 Epic Touch 4G? I know that other S2's have a USB flex cable assembly but I can't seem to find one for this particular handset.
Click to expand...
Click to collapse
I had a similar issue a while back. All I did was clean out the gunk built up in the usb port with a wooden toothpick and the issue any away
Surj138 said:
I had a similar issue a while back. All I did was clean out the gunk built up in the usb port with a wooden toothpick and the issue any away
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I had tried the toothpick trick that you and others had recommended. In fact it did make a positive difference but I still noticed there were still some strange things going on. I went back a second time but this time with a sewing needle and some magnifier glasses and picked it clean of lint and other junk. Of course with was done with the battery uninstalled. I think I'm back and up and running. We'll see if any of the problems come back. Thanks!
SyberTiger said:
I had tried the toothpick trick that you and others had recommended. In fact it did make a positive difference but I still noticed there were still some strange things going on. I went back a second time but this time with a sewing needle and some magnifier glasses and picked it clean of lint and other junk. Of course with was done with the battery uninstalled. I think I'm back and up and running. We'll see if any of the problems come back. Thanks!
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My aunt has a device with the exact same problem. It goes doo-doop like you connected the charger. And you can't turn it off ever because it gets on again. Did you fix it?
nlabrad said:
My aunt has a device with the exact same problem. It goes doo-doop like you connected the charger. And you can't turn it off ever because it gets on again. Did you fix it?
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Using the toothpick/needle trick went a long way towards getting it to behave properly. Like you said, it was doing the "do-doop" thing intermittently and sometimes it would go into and out of charging mode so fast that unless you were astute you wouldn't have realized that what it did. To figure it out I went into SETTING > BATTERY and observed that the "discharge time" on the battery would typically stay at 3 seconds which told me the phone thought it had been plug into the charger.
For the last two days it would seem that I have fixed the problem. After you carefully clean out the USB port of lint and junk with a toothpick and a magnifying glass or readers you may also want to consider getting a can of compressed air to blast it clean. I'm talking about the kind of compressed air sold at Walmart or Office Depot that is used to clean electronic equipment to blast the dust away.
Let us know if you get it fixed!
I don't know if cleaning the USB port had an effect on battery time but I'm getting relatively awesome battery performance like I've never seen before. After 12 hours and very light use the cell phone still has 81% battery left on it. It used to be sitting at around 30% by this time in the day.
think im having this problem. thinking its a damaged usb port. old battery everytime you stick the battery in or plug it in it thinks its charging. new battery i just ordered does the same too. its still charging so ill see what happens after but i say charging port probably?
steveokinevo said:
think im having this problem. thinking its a damaged usb port. old battery everytime you stick the battery in or plug it in it thinks its charging. new battery i just ordered does the same too. its still charging so ill see what happens after but i say charging port probably?
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I went through the same exact thing...ordered a new battery thinking the original battery was at the end of its life and causing the phone to behave strangely. With the new battery in place the craziness continued. I was thinking the micro USB was damaged and needed to be replace which BTW isn't an easy thing to change out like some of the other Galaxy phones because the S2 uses surface mount solder connections. You'll need very good eyesight and professional soldier skills to do it right without effing it up. Luckily, doing an extensive cleaning of the USB port fixed the problem. You wouldn't think lint would be conductive enough to cause a problem but alas, it does. Use a toothpick and compressed computer cleaner air with the battery removed when you clean it.
I'll have to try with the toothpick later. It's weird when you go into setting and look at battery it knows when it's on charge and when not on charge. But soon as you put a battery in, it turns on by its self but to the charging screen and can't be turned on unless both charger and battery are in.
Will the battery percentage read accurate still I wonder?
Sent from my SPH-D710 using XDA Free mobile app
Sent from my SPH-D710 using XDA Free mobile app
steveokinevo said:
Sent from my SPH-D710 using XDA Free mobile app
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Yup, that is exactly what I saw when I was having the problem. Basically what that screen shot is telling me is 13 seconds ago your cell phone made the "doo-doop" sound as a temporary short within the USB port fooled the cell phone into thinking it had the charger plugged in but just as fast as it thought the charger was plugged in the temporary short went away. In fact the "short" may have come and gone so fast as make it so that "doo-doop" isn't even heard. The key here in recognizing the problem is that while your charge may have been unplugged for hours you'll note the number of seconds that have gone by since the cell phone thought it was charging will be somewhere well under 60 seconds or at least that is what I experienced. I have every confidence that you have the same exact problem and you just need to thoroughly clean that USB port of every speck of lint and dust. Also, make sure your charger USB is clean and lastly make sure none of the pins on the USB connectors is bent and that that middle portion on the cell phone USB is right in the middle and not bent up or down in any fashion.
1well now i cant even charge my phone. charging port is ****ed. great! no more phone for me!
steveokinevo said:
1well now i cant even charge my phone. charging port is ****ed. great! no more phone for me!
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How did that happen?
BTW, don't forget...if the phone doesn't seem to want to power up hold the VOLUME UP and the POWER buttons at the same time for 15 seconds until you get the reboot option.
waiting for someone to fixit now for $45
---------- Post added at 01:16 PM ---------- Previous post was at 12:53 PM ----------
well they couldnt fix it. now im screwed
steveokinevo said:
waiting for someone to fixit now for $45
---------- Post added at 01:16 PM ---------- Previous post was at 12:53 PM ----------
well they couldnt fix it. now im screwed
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I'm in the same boat now [emoji22] Just happened a couple nights ago... Phone is plugged in but not charging. Not that big a deal, as I just got some spare batteries and external chargers. But now I've got to be super-cautious when flashing stuff, as I can't just Odin back without working USB
Trolling from my 4.4.4 LiquidSmooth'd E4GT using Tapatalk
That's what I'm stuck doing now. I'm not gonna be switching roms anymore lol. Had to buy a universal charger for the battery
I had this issue with mine as well. At first it seemed to be the recovery but I reverted to stock unroot and it still happened sometimes shine blue to make it think it was completely charged I know this phone had a lot of hardware issues. And then I took it apart cleaned it and what not. It still happened. So after some time it just stop happening and functioned normally. I am unsure what the problem was or why it happened. The whole time I really couldn't charge my phone at all unless it was by computer only
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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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.....
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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
JUMP TO SOLUTION
Hi everyone,
My phone (almost 2 years old, changed LCD for three times) started to lose a lot of its battery capacity from a month ago, and since yesterday I realized something's wrong with it, as it had some trouble charging the battery. At first, I was using my phone and its battery was around 20%, and then as soon as I connected the charger (genuine fast charge) it turned off and the red LED indicator kept turning on and off and refused to charge. then after a reboot, it started charging again, and then I left it charging at the night and at the morning I realized it only charged to 60% and the red LED didn't turn on at all. And now that all the battery is drowned out it's not charging at all and drawing no current from the charger ([email protected]).
Has anyone had any experience with it before? Is this a battery problem or the USB charging port flex cable which has some ICs on it (example)?
I'd appreciate your answers.
I can't tell from your story that you tried another charger ? I recall a similar charging issue from my HTC One X a few years back.
Replaced the charger and all issues disappeared.
Mr Hofs said:
I can't tell from your story that you tried another charger ? I recall a similar charging issue from my HTC One X a few years back.
Replaced the charger and all issues disappeared.
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Yes I have, Also seconds before it ran out completely I tried to check if adb works. connected it to my laptop and on the bootloader mode the adb recognized the device but the red LED didn't light up.
m.m.m said:
Yes I have, Also seconds before it ran out completely I tried to check if adb works. connected it to my laptop and on the bootloader mode the adb recognized the device but the red LED didn't light up.
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That's correct because a device doesn't charge in bootloader mode. Only off state, running OS or Dr TWRP recovery.
If you tried a different charger it can be pretty much only down to hardware, can't give any advice at that level.
Mr Hofs said:
That's correct because a device doesn't charge in bootloader mode. Only off state, running OS or Dr TWRP recovery.
If you tried a different charger it can be pretty much only down to hardware, can't give any advice at that level.
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Oops, I meant recovery mode.
does the device charge in the stock recovery?
m.m.m said:
Oops, I meant recovery mode.
does the device charge in the stock recovery?
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I'm afraid not, only the custom one.
I had almost the same problem with my phone. I sent it to a repair center and acording to their report, the circuit which is responsible for the monitoring of the charging process had a loose connection. Maybe because I dropped the phone a few times. Unfortunatly the circuits of modern phones are all on the same circuit board, so they had to change the whole motherboard of the phone. But now everything works fine.
So I just opened the phone and disconnect/reconnected the battery connector and it eventually started charging with the stock charger, but it charged up to 60% and then stopped. retried the same steps and no luck this time. then I tried charging the battery with an external li-ion charger (I know it's a dangerous task )
this time it charged up to 4.11 volts and then I turned on the phone and again the battery dropped to 60%. so I believe the battery is really dead and needs replacement. I'll update you when I replace it.
KingGong said:
I had almost the same problem with my phone. I sent it to a repair center and acording to their report, the circuit which is responsible for the monitoring of the charging process had a loose connection. Maybe because I dropped the phone a few times. Unfortunatly the circuits of modern phones are all on the same circuit board, so they had to change the whole motherboard of the phone. But now everything works fine.
Click to expand...
Click to collapse
Turns out I was wrong, my case was similar to yours. had to waste $9 on a battery to find out
it just fixed by disconnecting/reconnecting the USB connector bottom of the board, but I don't know how the flex cable for the back button got cut so now I have to replace the whole bottom circuit ($17 approx.) :crying:
m.m.m said:
Turns out I was wrong, my case was similar to yours. had to waste $9 on a battery to find out
it just fixed by disconnecting/reconnecting the USB connector bottom of the board, but I don't know how the flex cable for the back button got cut so now I have to replace the whole bottom circuit ($17 approx.) :crying:
Click to expand...
Click to collapse
So I went through the hurdle of replacing my battery and charge port, and the battery transplant went well, went from 70% to 100% battery health (yay!).
The first charge port I purchased (this is all eBay stuff) had a busted Recents button (copper trace in ribbon cable was nicked - when the part was removed from original phone for sure), so I complained and got a replacement; second one works well.
And because all bad things come in threes, the phone developed an echo (on the opposite side of the conversation) which I think I caused by ripping a bit of the mic rubber isolator which points towards the mic hole in the battery cover.
I believe I fixed it (still testing) by glueing some foam padding on the backside of the mic (on the charge port PCB, facing the battery cover).
Long story short, opening up the phone is a b###h, so do multiple repairs together, be careful not to break anything else (easier said....).
Good luck, let us know how it went.
So here's an update, First of all, I'm pretty happy with the battery replacement, It can hold like 10 hours of my usage while the old one could handle up to 6-8 lately, it's unbranded, and I got it from a local phone part store.
Second, the replacement for the charger flex turned out to be pretty good quality, and I've had no problems with it so far. I got it for $11 from AliExpress, but now it's about $10.5. But when I replaced everything and tried to reassemble the phone and tighten the screws it showed up with charging problems again, and I tried disassemble/reassembling the phone and reconnecting the charger flex, and the next time it charged but with no fast charge, so in the next try I also tried cleaning the flex connector with cleaning alcohol, and for the third try it finally started charging with no problems.
So now after like 2 weeks, it's had no problems so far.