Develop Bugs

Zenwatch wont charge - Black screen

So I've had my zenwatch for about a week now and lastnight it was working perfectly fine but this morning I woke up and my screen was black. I placed it on the charging cradle (which normally triggers the screen to turn on) this time nothing happens, the white charging indicator light on the cradle lights up but the screen does not cut on. I've tried holding down the power button, cleaning off the charging prongs, even using the usb of a pc for trickle charging but nothing seems to wake the screen up. Has anyone else ran into a similar problem? Know of a possible solution?
Thanks
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If the battery is totally flat it can take a while to show signs of life. Leave it on charge for half an hour and see what happens.

Left it on the chargwr for 8 hrs last night. Still no sign of life. Its so weird i have only had the watch for 1 week and its in perfrct condition. It just wont cut on.

Did you get an answer to this as I'm now in same position

Same thing has now happened to me!

Maybe they have a self destruct ready for Zenwatch 2 release! Will have to get my Moto out of hibernation when I get back home....

I am not sure but I think your watch is dead. One of my friends was using the Zenwatch and he has faced the same kind of problem. He couldn't get back his watch. You can contact with customer service.

Bug bug bug
Same problem happen to me... after 2 month of usage (updated to 5.1.1)
Accidentally my watch wont charge anymore until the battery running out
If I put my watch on charging craddle with original travel charger, the white led indicator of craddle turn on but my watch still won't charging and the screen just black... no vibration, no display, no sign of life... try to press power button as long as I can.. doesn't help...
Is this hardware defects or just software problem?
Anyone has solution or fix for this?
It is so weird..

Same issue. didn't charge it for a week and now wont show any signs of life even after leaving it on the charger for days. also tried holding the reset button for minutes.

Hi,
just recently I had the case with ZenWatch from Asus, which was shelved for one year. After connecting to charger screen stayed black and watch was vibrating (short vibration every two seconds).
This is typical fault of COMPLETELY discharged battery. Had such cases with telephones before. By experiment I found the way long time ago. You have to "initiate" or "ignite" battery. In case of telephone batteries take out battery, use old USB cable, clean wires from insulation from one end (opposite to male plug). Use black (-) and red (+) wires as 5 V supply. Identify + an - on battery. Prepare your phone, watch charger for charging. Touch end of + wire to + contact on battery/watch and - to - accordingly for about 20 - 30 seconds. After that quickly put battery to phone or watch to charger and normal charging will start. Be careful not to make any short circuit with wires or wrong terminals.
I made it many times and always successful. In case of Asus Zenwatch proper contacts are these corresponding to first two pins of charging cradle from the side of USB connection - outer one is ground (-) next one is +.
Good luck!

Happened to me recently after washing my watch. Turned out there was a little bit of water inside and after drying it, it powered up and started to charge properly again

I've recently had the same problem. When I connect the charger, the watch vibrates once then does nothing. Screen stays black no matter what I do, and I've left it charging for days now

SM-T800 Battery problem

EDIT: Please move this to Q&A and help section.. sorry.
Hello fellow tablet users.
Since the lost 2 weeks my tablet has been acting weird. It jumps alot on the battery levels, one second having 50% then 13% then suddenly 3% then plugging in the charger it has 50%.
I've tried to charge it fully then making a battery calibration but with no luck.. what should I do next? Full reset?
Kind regards,
Ratty

If you have the 8.4" it`s most likely an bad battery connection, due to an bad power connector or the part of the connector that is soldered to the motherboard coming loose, it`s an common problem with the 8.4" with people bending it while in back pockets ect, less of an problem with the 10.5" as you would need an hell of a back pocket.
Samsung knows about this problem, and according to one 8.4" owner replaced the battery connector with an more heavy duty version, some people say to solder the battery wires directly to the motherboard.
It`s quite easy to open the Tab S, lots of video`s on youtube and you just need an plastic pry tool they call an spluger or an guitar pick, I got an spluger on ebay for £1 an replacement battery is £9 an full kit is around $60 for battery and tools if you can do the job yourself.
https://www.newpower99.com/Samsung_...tery_Kit_p/samsung-galaxy-tab-s-8.4smt700.htm
https://www.newpower99.com/Samsung_...attery_Kit_p/samsung-galaxy-tab-s-sm-t800.htm
John.

ratty123 said:
Since the last 2 weeks my tablet has been acting weird. It jumps alot on the battery levels, one second having 50% then 13% then suddenly 3% then plugging in the charger it has 50%.
I've tried to charge it fully then making a battery calibration but with no luck.. what should I do next? Full reset?
Click to expand...
Click to collapse
Reset won't solve a hardware problem, it's very common in Samsung tablets : cracked or loose battery connector : male and female.
This is a close look of female connector:
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If it's not fully contact with male connector's pins, you will have battery fluctuation in capacity. The fix is simple: push the opening closer for all six cables.
This is the male connector , it's re soldered to fix battery quick discharge or capacity fluctuation

I'm having this problem for a long time on my TabS 10.5". I think it's time to discard this device but I'm low of budget to buy a good tablet now, is it secure to open it and bypass battery using direct connection to charging cable from the original USB cable? There are some videos on how to do it, but none of this device.

They are not engineered the same as laptops. They always run off the battery, whether the tablet is plugged in or not. This is a series arrangement. A laptop has power source switcher inside and can run off either; that's a parallel arrangement.
The battery completes the circuit. The charge cord doesn't connect directly to the tablet because the battery is in between. Outlet-->charge cord-->battery-->tablet. You can't just jump over a step.The battery completes the circuit. The charge cord doesn't connect directly to the tablet because the battery is in between. Outlet-->charge cord-->battery-->tablet. You can't just jump over a step.
They are designed on an idea that the user will use it on the go, rather than sitting at a fixed location connected to a charger.
As such, the internal circuitry of a tablet allows the device to work only when the battery is connected to it.

Bypass the battery for direct connection
Hi,
I have a similar connector for the battery on a Samsung Tab GT-P5200.
I want to directly connect the (two) wires from USB power source and bypass the defective battery and the normal mimi USB connector.
Therefore can someone help me out with matching the colours?
Tere is just +-(red/black wires on USB) and the connector from the battery has two red, two bue and two black.
I presume at least two should charge the battery and other two should transport the charge from the battery. And the blue ones maybe for control?
Please give me your though, or maybe suggest other place on the bord co connect directly.
Thank you!

Galaxy Tab S 8.4: Battery Drop/Jump/Restarting Problem

Galaxy Tab S battery drop/jump/restarting problem
Hi everyone,
I've got a Galaxy Tab S 8.4. The battery sometime drops and screen flashes and it continually restarts. I have had to put the tablet on Power Saving always to avoid restarting. Attached is the charging history graph and it show a slow slope charging and a sudden fluctuation. It seems obvious that I should hange the battery. Am I right? Any comments?
postimg.org/image/uo94oow95

Had the same problem. Either your battery or the battery-to-motherboard connector are faulty. Substituting the battery should do the trick

salimgs said:
Hi everyone,
I've got a Galaxy Tab S 8.4. The battery sometime drops and screen flashes and it continually restarts. I have had to put the tablet on Power Saving always to avoid restarting. Attached is the charging history graph and it show a slow slope charging and a sudden fluctuation. It seems obvious that I should hange the battery. Am I right? Any comments?
postimg.org/image/uo94oow95
Click to expand...
Click to collapse
Man, I had the same problem too, and after trying every firmware out there (assuming it was a software problem) y ordered a new battery, and everything works flawless now.

salimgs said:
Hi everyone,
I've got a Galaxy Tab S 8.4. The battery sometime drops and screen flashes and it continually restarts. I have had to put the tablet on Power Saving always to avoid restarting. Attached is the charging history graph and it show a slow slope charging and a sudden fluctuation. It seems obvious that I should hange the battery. Am I right? Any comments?
postimg.org/image/uo94oow95
Click to expand...
Click to collapse
Fwiw, my nephew had same problems. He did a factory reset and it works normally now. He too expected to have to crack it open and check connections but the reset worked for him. Good luck
TiTiB (tweak it 'til it breaks) ¤ Galaxy Tab S | SMT-T700 | klimtwifi ¤ AICP 5.1.1

Yeah, It a bad battery connection, this happens to lots of 8.4" Tab S1, due we think to repeated bending of the tablet that loosens the battery connection, i have even read of an 8.4" owner that opened his tablet to find that the battery power connector had broken totally off the motherboard.
John.

Trying to post what i found everywhere...bought a galaxy s 8.4 for 60$ from a pawnshop, guy told me it it shut down all the time, and he didnt want to fool with it. Im a tech, so i figured why not....problem was at low power only, so rt off i bought a new battery, and thought that would solve it..No such luck, so after 3 days of flashing and tryin all kinds of roms etc. I determined that it must be hardware, so I started looking at the power plug. Keep in mind, I was now having the same problem so many people have with losing power, constant restarts for no reason, and it was worse then with the old battery. I took the back off, and pulled out my magnifying glass and looked at the plug for the battery. THE WHOLE PLUG WAS LOSE ON THE MOTHERBOARD. There are 6 connections from the battery to the board that go through a black molex recepticle..my problem and im sure alot of other peoples problem is Samsung has the pin that are in the plug, connected to the board with nothing more than solder strings. The pins dont mount into the board at all, I know because I took the whole board out and flipped it over. Nothing to even solder on the other side. I could move the black recepticle up and down and see that all 6 pins were unsoldered. So the fix was to buy a really small soldering iron and rosin core solder and try to tack the pins back to the board. It took a while because of the size, but just turned it on, and voila! everything works normally now. SO to bottom line it, if you have strange power issues, pop the back, VERY CAREFULLY pop the battery connector off and reseat, make sure to check those solder points, if everything seems good and you still have problems, you can go the new battery or hard reset route. Hope this helps someone

WTF respond

tried replace a battery, no luck

My friends, I have more new about this issue.
I found a hardware fix for this, but it requires some soldering skills.
It seems that power consumption is triggering the baterry power protection.
I manage to bypass the battery protection circuit on the battery and it solves the power cycles.
If anyone wants help on this, I will try do take some pictures.
I also re-solder the power connector on the table PCB because it is weekly soldered...
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PandaKiller said:
My friends, I have more new about this issue.
I found a hardware fix for this, but it requires some soldering skills.
It seems that power consumption is triggering the baterry power protection.
I manage to bypass the battery protection circuit on the battery and it solves the power cycles.
If anyone wants help on this, I will try do take some pictures.
I also re-solder the power connector on the table PCB because it is weekly soldered...
View attachment 5161979
Click to expand...
Click to collapse
I had similar problem in the past, my tab s' screen would flicker and abruptly restarted if the battery level fell below 39%. So I just reseated the battery connector I didn't resolder anything, problem went away. However recently my device would take a very long time to charge..It is unusually slow, I already change the cable or the brick. still same. So I'm planning to resolder the pins soon..Can you explain in detail what you did to bypass the battery protection circuit? Is it necessary?

vaah said:
I had similar problem in the past, my tab s' screen would flicker and abruptly restarted if the battery level fell below 39%. So I just reseated the battery connector I didn't resolder anything, problem went away. However recently my device would take a very long time to charge..It is unusually slow, I already change the cable or the brick. still same. So I'm planning to resolder the pins soon..Can you explain in detail what you did to bypass the battery protection circuit? Is it necessary?
Click to expand...
Click to collapse
If you look, at the top of the baterry there are 2 white wires soldered in the baterry PCB.
I just connect the battery terminals to the red/black cables that goes to the Tablet pcb cable.

Idle Battery Drain - Even When Device Turned Off

Hi,
Really strange one and hoping someone can help.
I have the 10.1 Exynos, and I lose ~20% battery per day when I leave the tablet alone, even when it is switched off.
What I have tried,
1. Replacing the battery - same symptoms with a brand new battery
2. Replacing the Micro USB charging port - same symptoms with both batteries
I did a further experiment with both batteries, old and new,
1. Charge to 100%
2. Leave disconnect battery cable and leave the device for 48 hours
3. When I plug the cable back in, I have 99% charge on both batteries.
4. When I leave the device idle with the battery cable plugged in, again I lose about 20% per day when the tablet is off.
I'm really confused right now, and would like to resolve this issue so I can hand over the old tablet to a relative, as it is still a very capable device.

hello
switching off does'nt disconnet battery
some programs go on ( time, date, ..) with pseudo capacitive battery
a resistive element is still connected (a component is deffective)
regards

Understand, but 20% is a lot of battery use for an idle tablet.
Do you think there is any hope of fixing this?
Could it be something that can be re-soldered perhaps?

Are you rooted? Try Better Battery Stats. It can show what is running while it's supposed to be idle. Also, try Greenify.
Cheers,
Rich
Zico 10 said:
Understand, but 20% is a lot of battery use for an idle tablet.
Do you think there is any hope of fixing this?
Could it be something that can be re-soldered perhaps?
Click to expand...
Click to collapse

I am rooted, and no app shows up in battery stats BECAUSE THE TABLET IS DRAINING BATTERY WHILST IT IS SWITCHED OFF.
Please read the thread before you comment next time.

@Beut
Do you have any ideas??

Zico 10 said:
@Beut
Do you have any ideas??
Click to expand...
Click to collapse
Try to resolder the battery connector

Beut said:
Try to resolder the battery connector
Click to expand...
Click to collapse
Do you have any tips or guides on how to do this?
Would applying conductive wire glue work?

You can try but it doesn't make strong bond. The epoxy conductive glue may work if you don't know how to solder.
However, the silver conductive wire glue, sold in Amazon around $3/ 0.2 ml syringe works very well to fix the loose battery cables which causing intermittent power, restart, battery quick discharge ( actually not quick discharge: loose battery cables will cause the tablet read battery capacity incorrectly ).
If your battery drops then movement later it goes up or after restart, 99% you have a cracked battery connector on mainboard or loose battery cables.
This is the case, the cables doesn't make contact : two red cables ( positive ) have no contact, you will see the problem of not charging.
If one positive ( red ) or negative ( black ) cable loose its connection, your battery might drop 40 to 50% instantly.
If they're partly make contact, you might experience a boot loop as the tablet doesn't have enough power to start the system.
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This is the original battery cables before apply the glue
After applied glue, smear the glue to inside of cable as much as possible, clean with alcohol the extra conductive glue between cables , otherwise you will have shorted circuit and you might destroy the mainboard. Later on, you can remove the battery cables easily, that's why this conductive wire glue is not a perfect solution to substitute soldering.
I did fixed a Note 2014 today, it shut down at 28%. Applied the conductive glue to all six cables, reconnected it to battery connector and charger.
You can speed up the healing process by heating it with a hair dryer for a few minutes.
Do you know what I get ? The battery icon shows up with 88%, go up 60% when all cables make a solid contact to all pins of battery connector as the conductive glue fills up
all gaps between cable's terminals and pins.

switched off you mean you select the "Power Off" option?, or switched off meaning you press the power button and screen goes off?,
if the first option then I suspect when you charge your tablet its not "really" charging it trys to feed the battery but at some point it takes no more charge and it will fake the "100% charge value", and on a reboot it reads the stats again and says oh 70% charged, in anycase this could be because you are using a bad cable or a bad USB charger, try using the stock cable and charger if possible, if problems still exist try to reseat the battery by opening the tablet and unplug / replug the batter in.
if the second option then something is causing wakelock

!!!before touching the hardware!!!
Zico 10 said:
Hi,
Really strange one and hoping someone can help.
I have the 10.1 Exynos, and I lose ~20% battery per day when I leave the tablet alone, even when it is switched off.
What I have tried,
1. Replacing the battery - same symptoms with a brand new battery
2. Replacing the Micro USB charging port - same symptoms with both batteries
I did a further experiment with both batteries, old and new,
1. Charge to 100%
2. Leave disconnect battery cable and leave the device for 48 hours
3. When I plug the cable back in, I have 99% charge on both batteries.
4. When I leave the device idle with the battery cable plugged in, again I lose about 20% per day when the tablet is off.
I'm really confused right now, and would like to resolve this issue so I can hand over the old tablet to a relative, as it is still a very capable device.
Click to expand...
Click to collapse
!!!BEFORE TOUCHING THE HARDWARE!!!
TRY first just update or upgrading OS or maybe better downgrading/ flashing back to stock.
if doesn't work?
Then give a try "re-partitioning" your phone. Try searching for sometimes called "Repair Files"
You may need your "Brain" to do that. Google is "always there to help us" how.
coz I am not responsible for that. just giving my Idea
Goodluck!!! :good:

CarCE12 said:
!!!BEFORE TOUCHING THE HARDWARE!!!
TRY first just update or upgrading OS or maybe better downgrading/ flashing back to stock.
if doesn't work?
Click to expand...
Click to collapse
That was the first thing I did, and testing shows that the issue is definitely hardware related instead of software - for example, the battery will drain even when the device is powered off!
I have tried the advice of @Beut as well, however it still drains unfortunately.
I still have the tablet, but unfortunately it is largely useless to me. Though I still can't bring myself to throw it away.

New battery / USB port = Charges as "USB" only (no Quick Charge) - HELP!

Hi,
My HTC 10's battery wasn't holding a charge for very long and the rear camera needed to be replaced so last night, following instructions online, I opened up the phone, and replaced the LCD screen, the rear housing, the rear camera module, the battery and the USB charging port (which includes microphone and capacitive buttons). I made sure to carefully put everything back together exactly as I took it apart. Every wire, every ribbon, every screw and every piece of tape.
Now that I've got it all back together and buttoned up, I tried charging it. It seems to only recognize chargers as USB (as if it's a computer port) and therefore charges EXTREMELY slow. The battery is OEM HTC and the Charging port also looks OEM, identical to the ones I removed. Anyone know what's going on? I've tried plugging the device into the original HTC QC3 charger and cable as well as an Anker battery pack which also supports QC3.
USB charging speed makes this phone basically unusable now. I use the device constantly throughout the day and it's not going to work like this. Does anyone have any experience taking this phone apart and might have any guesses as to what's going on?
Edit: Here's what a night of being plugged into the official HTC charger + cable looks like. What would have charged the phone fine normally via QC3.
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just becuase it looks oem doesnt mean it is.
I had this happen to me with an m7 way back. Charging port was crap and decided on replacing it instead of dealing with the insurance dectuble. Bought the port for 40 bucks and it came with tool all nicely packaged. Replacement was easy but once i tried the port out it kept giving me a usb prompt for connection options and it would only charge at less than 1 amp. Pull the phone apart again and plug in the old port and bam direct fast charging no prompt.

So I opened the phone back up, and swapped back in the original charging port. Still won't quick charge... How can I be sure it's not some software reset that is needed? I'm almost ready to just cave in and go buy a new phone tomorrow...
Any other ideas? I can try reconnecting the original battery and see if that works next. It's just a huge PITA removing the mid-frame from the rear housing every time. I can't test the phone without the rear housing because of the antennas. It just boot loops if you try.
Edit: I plugged it into a PC USB port and it's not detecting that it's a data port at all, and treats it just like it would a wall charger (albeit charging extremely slowly). That leads me to believe it's not the battery at all and the fact that the old port is doing the same thing is concerning. Could I have damaged something? There are 4 plugs that go into that charger board. The main snap down plug, two small cables and another small ribbon cable. All look to be in good solid condition with no visible damage. Hmm.......

drumz0rz said:
So I opened the phone back up, and swapped back in the original charging port. Still won't quick charge... How can I be sure it's not some software reset that is needed? I'm almost ready to just cave in and go buy a new phone tomorrow...
Any other ideas? I can try reconnecting the original battery and see if that works next. It's just a huge PITA removing the mid-frame from the rear housing every time. I can't test the phone without the rear housing because of the antennas. It just boot loops if you try.
Edit: I plugged it into a PC USB port and it's not detecting that it's a data port at all, and treats it just like it would a wall charger (albeit charging extremely slowly). That leads me to believe it's not the battery at all and the fact that the old port is doing the same thing is concerning. Could I have damaged something? There are 4 plugs that go into that charger board. The main snap down plug, two small cables and another small ribbon cable. All look to be in good solid condition with no visible damage. Hmm.......
Click to expand...
Click to collapse
I wouldnt trust pc usb ports.
Sounds like it needs to calibrate maybe?. Let it slowcharge until its 100% and reboot.

So I took the phone apart again, took the USB port board off, and wiped it all down with 91% iso including the ribbon connectors, then plugged it all back in. Low and behold, it's working now! Great right? Except in the process of putting the phone back together, I managed to rip off the back button ribbon.... FML
So now that I know the original board is working again, I suspect it had to do with one of the ribbon connectors, specifically the one that's held down by two screws. Maybe it wasn't aligned just right or something.
Tomorrow I'm going to pray to all the non-existent gods and try swapping in the replacement board, cleaning it with iso again, one last time. Hopefully it works.