Database Users

[Q] epic 4g permanently bricked on 2.2???!!!

I had my epic 4g and Odined to Dk28 with gps fix, clockwork, etc.
I played paintball and some of the dust went inside but when i got home i wiped the keyboard and slider. slider seems fine
I had the GPS running for about 2 hours until I got home. There was about 1/3 or 1/2 juice left but then It shut down and restarting, stating it only had no power left.
I took out the battery and it still boot loops (it gets to home screen - loads sd card/usb debugging/wifi and gps are on, but then reboots. im not even able to turn it off.
I tried pressing 1 and power for odin, it worked once or twice, but i wasnt able to flash it and restore it. (Yellow Com) but failed or not work.
after that 1 and power doesnt do anything, and neither does power, vol down, and camera.
please help, as i need to go back to work tomorrow.
thanks in advance.

Boot into Download Mode, flash back to stock (check the Epic Wiki for instructions), start over. Sounds like you've just got a bug somewhere in the whole process. Unless you've deleted, moved or whatever'd something you shouldn't have, you shouldn't be having this issue.
There is a thread for fixing bricked Epics.

If you press pwr, 1+pwr, vol. down+camera+pwr and nothing comes on nor charge light (red) comes on when plug in, then you have a very shiny expensive paper weight.
Sorry bro. I have one sitting on my desk with no insurance (OUCH)...

no light when i plug into usb or charger. cannot get into download mode. Wow i could brick a phone in under 3 weeks of getting it. going to sprint store.

Let us know what they say, Last time i went into the sprint store for an exchange they intentionally split water on the water damage film to try to say I voided my warranty. the reality is that they had already done diagnostics on the phone before they did this little trick so i was able to threaten to call my lawyer and got a replacement. I hate sprint so much....

Ouch, how did you know they already ran a diagnoses on it?

fone magically unbricked itself so i was able to get into download mode an Odin a 2.2 again. but the battery seems iffy...and this is only 3 week using the phone. its at 9% charged but shuts off. need to see if i can fully charge it. but may end up getting new phone at sprint store since its under 30 days and fone still looks new.

Maybe you just got a bad battery
Sent from my ComBadge

Sounds like you need to reset your battery stats.

didnt get new phone yet since phone hasnt bricked itself again yet.
i fully charged it last night and took it off teh charger before i went to sleep. now 10 hours later. its at 66% is that NORMAL?
sprint cust support said i should use default CHARGER to get best charging results. im using a ebay generic CABLE on USB does that matter? do they mean charger or cable or both?

A plain USB cable used to charge on a PC only draws 380mA to charge. A wall charger, like the one included with the phone, will charge at 600mA.
But still, neither should take the 10 hours you are seeing really. Wall charger is usually 3-3.5 hrs and USB charging is somewhere around 5-6.

victric said:
didnt get new phone yet since phone hasnt bricked itself again yet.
i fully charged it last night and took it off teh charger before i went to sleep. now 10 hours later. its at 66% is that NORMAL?
sprint cust support said i should use default CHARGER to get best charging results. im using a ebay generic CABLE on USB does that matter? do they mean charger or cable or both?
Click to expand...
Click to collapse
66% after 10hrs of use seems normal to me.

sry double post. using tether internet...

UH OH!
I was installing from some apks and the phone got into boot loop AGAIN!
I'm thinking about going to sprint and exchanging it. But im afraid of rooting it again...bc i think it might trigger the boot loop again. Any ideas?
re: last post, 66% after 10 hours of idle with screen off (this is "use"?) is normal?

victric said:
UH OH!
I was installing from some apks and the phone got into boot loop AGAIN!
I'm thinking about going to sprint and exchanging it. But im afraid of rooting it again...bc i think it might trigger the boot loop again. Any ideas?
re: last post, 66% after 10 hours of idle with screen off (this is "use"?) is normal?
Click to expand...
Click to collapse
Odin that thing back to 2.1 and exchange it.

[Q] Didn't even flash or root yet and my 32 grey GT died last night...

Didn't even flash or root yet and my 32 grey GT died last night. It had been working great and was getting ready to flash pershoots kernel this weekend. Last night I plugged in after shutting it down like I do every night. Today when I went to turn it on nothing. I tried holding down the power button for a while and still nothing. I tried holding down volume buttons with power for extended period still nothing. I even tried plugging into different outlet to see if something happened with outlet and maybe drained the battery overnight. Luckily I got it from Fry's two weeks ago on Friday right when they came out and Fry's has a 15 day return policy but this makes me a little concerned... and that's cutting it a little too close.
Has anyone heard of things like this happening with the GT? I'm thinking I may need to see if they'll still sell me the extended warranty. I babied this thing and hadn't even flashed anything on it yet. I'm a little concerned about the reliability of the hardware... I'm not usually the one with the needle in the haystack device that goes bad but who knows... I'm already in withdrawal without it.
Is there anything else I can try before I take it back? Maybe try plugging it into the computer instead to see what happens? I can't really see what else I could do since this thing doesn't have a removable battery. If it won't power on I can't imagine there's much I can test with the SDK dev tools from the PC using the usb cable?

plugged it in with usb...
I do hear the sound of a device being plugged in on win7 when I plugged GT in and got the driver message in tray. GT still won't turn on. When I hold down the power button every about 6 seconds my windows machine machine makes the same sound you get when plugging in a usb device in addition to an extra sound at the end.
[email protected] well I guess it's going back tomorrow.

You got the sleep of death. This is a honeycomb bug that i have personally experienced in the xoom, transformer, and the GT. The way to fix it is to unplug the GT, press the power button down by itself and hold it until the you see the screen turn on and startto boot up. It may take 15 seconds or more.
If that doesnt work, plug it into the wall outlet and try the process again. If that fails also, unplug it again and try the process once more.
That combination seems to work for everyone. The only exception would be if the battery is completely drained. You would need to plug it into a wall charger for a few hours and let the battery charge, and then try the process again.
I dont know why this hasnt been fixed by google yet, its really annoying. I thought 3.1 would fix it but it didnt.

you should have post this on the general thread, but why dont you return it for a different one? problem solve...

Android Development is not for your Questions or Problems Please post in the correct forums
Moving to General

I think you got the battery drained .. for some odd reasons the android has leaky power consumption even when shutdown on occasions ..
Charge it up for a while .. wait .. correction LONG while ..
Hope that is the problem

Exactly the same problem, I have tried the hold power button but it is not working... any other work around?
Please Help

I chatted with a rep from Samsung last knight and he told me that I needed to leave the Tab charging for at least 6 hours and then try again... so I'll let you know if that did the trick... hope it does...

I've actually had this happen on two different 32GB Galaxy Tabs (the original one I purchased and its replacement). After powering the device down it would not boot up.
In both cases it happened about 3 days after receiving the tablet and with 80-90% battery charge remaining. I tried additional charging, holding the power button down for an extended period of time, and attempting to boot into download mode - everything failed to bring it back to life.
I'm not sure what triggers this condition my only suspicion was that it may have something to do with enabling encryption on the device. On the second tablet I didn't have time to do much customization or install many apps but it ended up dying shortly after enabling encryption.

Wow. This happened to me yesterday with my 16gb from Sprint. Had come unlocked,yesterday 3 days in, died. I tried all the suggestions above to no avail.
Took it to corporate today. Now waiting on replacement.
bumming*
Hope next one is unlocked
Edit**** worked. Lol. Guess I didn't try it again today after I tried charging it last night.
About 15 to 20 seconds and she's back!!! Excellent! ! Thank you so much.
Not sure now whether to replace it.
With another.
Sent from my PC36100 using XDA Premium App

Nexus 7 random reboot, screen jamming, making noise

HELP,
yesterday, I was using my nexus 7 for normal use, wasn't playing game, just browsing with chrome. the battery was 8 percent when I last saw it. I then proceed to charge it, but the thing suddenly just shut down itself. I thought I misread the battery percentage, so I charge it anyway. about an hour later, i checked on my nexus 7, turn it on, got to the boot screen, got to the home screen, use it for about 15 minutes, and suddenly, the screen black out, it was flickering like crazy, and making some white noise ish sound. I panicked so I hold down the power button and turn it off. I turn it on again, and after about 30 seconds, the same thing happened again. I was using motley's kernel with 520 GPU, and I thought, maybe my nexus 7 cant handle the GPU OC. So I went to recovery, tried playing with recovery for about a minute or so, but the screen didn't flicker at all on the recovery. So I flashed the 484 GPU version of motley's kernel. When I reboot to system, the same thing happened again. So I thought, maybe if I restore to my old backup, it would not be like this any more. so I wipe the data, dalvik, and cache, and I restore my old backup. But the same thing happened again, only this time, after I turn it off, it make a high pitched sound.
I waited for about 6 hours, and now when I turn my nexus 7 on again, it works normally.
So, what has happened to my nexus 7?

bump

I'd say it is the overclock. Graphic cards do some weird stuff when overclocked. You can burn up your GPU doing that and cause it to forever freak out. I always shied away from GPU overclocks.
Sent from my Nexus 7 using xda premium

would that cause any permanent damage?

keni.mardira said:
would that cause any permanent damage?
Click to expand...
Click to collapse
It should be ok if you reflash back to stock rom to make all the hardware back to reset mode. A warning always given when we try to flash rom with oc created.

i also experienced this one, also received a battery warning and then suddenly screen went blank. then same weird thing happened as the one above. I'm on paranoid android rom and i'm quite sure it's not overclocked or something. Was only able to get back to normal by holding the power button for around 15-20 seconds...

Happens to me
This will happen to me a lot when my nexus 7s battery dies, I plug the tablet in and then immediately try to start it up. It will work for around 30 seconds then look like an old TV without a signal. I am on stock everything, no rooting or custom Roms (yet). I always thought it had something to do with battery calibration being off and the tablet not having enough power to run, because it always works fine when I charge it before attempting to boot.
I have also noticed that every once in a while the screen will have a vertical line of pixels flicker.

Same thing happened to me yesterday...
I got the "low battery" warning and after some time the screen started flickering in many colors and there was a weird static noise.
I pushed the on/off button, but it wouldn't turn on again. After a few minutes of charging, I could turn it on again.
This isn't normal behaviour, is it? Shouldn't the N7 perform a regular shut-down when the battery has no juice left?
I'm on the rooted stock rom btw.

androidswagz said:
This will happen to me a lot when my nexus 7s battery dies, I plug the tablet in and then immediately try to start it up. It will work for around 30 seconds then look like an old TV without a signal. I am on stock everything, no rooting or custom Roms (yet). I always thought it had something to do with battery calibration being off and the tablet not having enough power to run, because it always works fine when I charge it before attempting to boot.
I have also noticed that every once in a while the screen will have a vertical line of pixels flicker.
Click to expand...
Click to collapse
+1 bro. I am having the same problem. what do we need to do ? it is same with all nexus 7's . should we claim the warranty or just neglect it ? wat say ?

Aditya88 said:
+1 bro. I am having the same problem. what do we need to do ? it is same with all nexus 7's . should we claim the warranty or just neglect it ? wat say ?
Click to expand...
Click to collapse
I faced the same problem. I dont know when the battery might have drained out, but on starting the tab on low battery, it suddenly started showing black screen with little grains and suddenly stopped with a noise. I charged, started the tab again while charging, and the battery reading stuck at 21% even after charging for 20 mins. Within 5 mins, it happened again. Now after 35 mins of charging, I start it again, it boots normal, and now its reading the battery percentage in an incremental value (started with 22%) and now its again stuck at 23%
Is this a HW related issue? Or do you think it is more of SW related issue? If it is more towards the HW side, we better have it replaced. Mine is C70 model.

bump
just happened to me... it may have run out of juice... didn't turn on when I tried, so I guess it did... then I put it on the charger, tried booting it, went away for a sec and when I came back I also got this black screen with some flicker and a static noise...
will now try to charge it over night before trying again...

Nexus 7/Google problems
I received my Nexus 7 on Aug 21 after hearing the rave reviews. It didn't come with app for a camera, so I downloaded one.
The camera didn't work. I re-booted it & it worked this time. Downloaded Skype - whole reason for getting the tablet - to stay in touch with family that is far away. Tried to Skype - camera wouldn't work. Rebooted - worked this time again (getting tired of having to reboot for something I want to use to work). On Sept 2, sent message to Google inquiring about camera & app I downloaded. Only response - "thank you for contacting...blah, blah, blah - check out Q&A." All along, the tablet would shut itself down & reboot randomly (battery fully charged sometimes). On Sept 13, I shut it down & charged it. After a full charge, I tried to power it back on. Tried again several times that night & then the next morning. Called Google (who I bought it from). Told them I didn't want a piece of junk that wouldn't work. He told me it was past my remorse period. (The only remorse I have is buying their piece of crap instead of a reputable one.) I finally did get it to come back on, but camera hasn’t work since even after a complete factory reset. Any way – in order to get this one fixed, I have to “buy” a new one, then send back the old one & be reimbursed. Is this a legitimate business practice?

hi,
since today i have the same issue. did nothing special, just swichting from g currents to chrome. stock rom, no modifications, not rooted, everything original
n7 suddenly had a black screen(battery was at 28%). nothing worked, no powerswitch(10-30 secs). when connected to original power supply and cable, it boots up.. google logo .. glowing X.. lockscreen. then, approx. 30 sec later it turns off again(screen black). usb cable still connected. after some time it comes up again.. and repeats the procedure. after some cycles it stops, and when i reconnect the usb calbe it starts over again. sometimes, before it turns black, it shows a flickering screen and sometimes fizzling sound.
any suggestions?

I had this same issue right after the 4.2 ota update, after leaving it on charge overnight it seems fine now after a couple of discharge / charge cycles
Its like after the update it was over estimating the battery level
Sent from my Nexus 7 using xda premium

Same thing!
I have a completely stock Nexus 7, and the EXACT same problems are happening to me too! The first couple of times it happened my tablet would reboot normaly. But now, my tablet won't boot up at all. Any suggestions on what I should do? Also, remember, I have no mods installed.

Happening to me too.My N7 shut itself down because of low battery a couple hours ago and I haven't been able to get it to boot since. When I plug it into the charger it shows a flickering screen like a tv with no signal but with less white flickers. I've tried multiple chargers and cables but I could only get it to boot up a couple times and both times it did not show that it was charging even though it was plugged in and the battery was at 0% so as soon as it boots up it shuts itself down again because of low battery.
So now I've got it on the charger, screen all a'flicker, waiting for it to get a charge but I've got a feeling its not even charging because, like I said, the few times it has booted it showed the battery at 0% and not charging.
I guess I'll try to leave it alone for a while and see if it will start up after being plugged in for a bit.
EDIT: I let it sit there and charge for about an hour or so (with the screen flickering) and I was finally able to get it booted. It said it only had 3% battery but now it seems to be charging as fast as usual.

devhen said:
EDIT: I let it sit there and charge for about an hour or so (with the screen flickering) and I was finally able to get it booted. It said it only had 3% battery but now it seems to be charging as fast as usual.
Click to expand...
Click to collapse
Yup... I've let mine sit there turned off and charging over night... helped!

Just had a problem with the Nexus 7 not charging when battery was likely fully depleted. Putting a charge cable in was automatically booting the Nexus 7 up and wouldn't charge shutting down right after. Loops going on and off. What I did was plug a charge cable in and hold power+both volumes and now I believe I am charging at the bootloader screen. It stays on so I will leave it like this and if it doesn't resolve the issue I will try recovery once it is charged.

I've just started having the same issue. Has happened twice when battery gets to 8%, suddenly jumps to 0, shuts down, then after a few seconds restarts itself. Gets to home screen for a few seconds, battery showing 8, then jumps to zero, switches off and has flickering blocks on screen with static noise. This keeps repeating, only way I have found to solve it is to load into bootloader, then select power off. Device charges normally then and once charged works fine. I am unlocked and rooted but running stock 4.2.1, think I'll just have to return it for a warranty claim.

Based on what you experienced, the lesson here is your device can't handle the GPU over clock of more than 446mhz or it will do some crazy stuff.
Sent from my Nexus 7 using xda app-developers app

[HELP!] 2012 Nexus 7 won't turn on

I was using my N7 a few days ago, playing dots, and it had 15-20% battery left. All of a sudden, it shuts down, saying the battery was drained. Since then, I've charged it, held down the power button for 30 seconds, volume down + power, etc and I can't get the thing to turn back on. I'm rooted and haven't flashed a rom in probably 2 or 3 months. Prior to this, I haven't done anything with system files or anything like that. I just can't get it to turn on.
Incidently, a week ago I tried to connect it to my computer but my computer never would recognize that I had connected it. It had, though, been charging properly right up until this happened.
The battery dying has happened before and usually I have to keep it on the charger for a while before it will turn on but that hasn't helped yet. Any suggestions? I really don't want to have to buy a new one!!

nvillamob said:
I was using my N7 a few days ago, playing dots, and it had 15-20% battery left. All of a sudden, it shuts down, saying the battery was drained. Since then, I've charged it, held down the power button for 30 seconds, volume down + power, etc and I can't get the thing to turn back on. I'm rooted and haven't flashed a rom in probably 2 or 3 months. Prior to this, I haven't done anything with system files or anything like that. I just can't get it to turn on.
Incidently, a week ago I tried to connect it to my computer but my computer never would recognize that I had connected it. It had, though, been charging properly right up until this happened.
The battery dying has happened before and usually I have to keep it on the charger for a while before it will turn on but that hasn't helped yet. Any suggestions? I really don't want to have to buy a new one!!
Click to expand...
Click to collapse
Check the fixes in the OP here...
http://forum.xda-developers.com/showthread.php?t=2090826
Good luck!

billykxda said:
Check the fixes in the OP here...
http://forum.xda-developers.com/showthread.php?t=2090826
Good luck!
Click to expand...
Click to collapse
Unfortunately this didn't do anything for me. I took the back cover off, disconnect and reconnected the battery cable and it still won't turn on. I called google but since I bought it from HH Gregg they won't RMA it. I bought it barely 13 months ago so the store probably won't help me out either. I have no idea why this happened and it's driving me nuts.
Any other suggestions?

Nexus 7 won't charge/power on/can't access fastboot or bootloader

Hi guys,
My Nexus 7 (2012) turned off(not properly) when the battery level was low and won't power on. I tried a battery from a working tablet and tested my battery in another tablet. It seems like the issue is somewhere else.
These are the things I tried:
- leave it for a couple of hours charging (no battery sign at all)
- hold the power button with/without the volume levels while it being both connected and disconnected.
- tested my battery in another tabled and put a fully charged battery from another tablet
- made sure that the battery is connected
There was one more thing I tried - to press the Power button with no battery inside but the tablet being connected to a laptop via the USB cable. One could hear something like a boot noise coming from the tablet (doesn't happen when the battery is inside)
In December, 2015 I installed a Custom ROM with android 5.1.1 which I found here http://forum.xda-developers.com/nexus-7/development/android-6-aosp-grouper-t3268172/ (the thread was renamed and is now about the Android 6 update) The tablet worked fine for these 3 months but one day when I was checking my email it went off and won't respond to any actions.
Could you please help me to fix it? I'm just not ready to give up on this tablet. Thanks!

Both you and i, same model, essentially, the same circumstances. I also tried every method you mentioned as well. Even down to the flashing of a rom. Same results. I even tried "jump starting" the battery. Not wanting to give up on it. It sits in my closet like that boy in A.I at the bottom of the ocean, waiting... I know that is not the reply or help you were looking for. Just so you know, you are not alone..
Sent from my LG-H345 using Tapatalk

ge1026 said:
Both you and i, same model, essentially, the same circumstances. I also tried every method you mentioned as well. Even down to the flashing of a rom. Same results. I even tried "jump starting" the battery. Not wanting to give up on it. It sits in my closet like that boy in A.I at the bottom of the ocean, waiting... I know that is not the reply or help you were looking for. Just so you know, you are not alone..
Click to expand...
Click to collapse
Well, that's a good start, at least I am not the only one!
Have you tried to connect your device via USB? My laptop can see a connected device but it can't recognize it and I hear some sounds coming from the tablet when I try to hold the `power` button. This made me think that it can be a display/screen related, so the device works but we can't see it due to the broken screen/display. Don't know how to check that though.

Same here, stock Nexus 7, won't turn on, just switched off one day and won't come back on, have tried everything as suggested above, can't get it to flicker, doesn't even register the power connection with a green light or anything

topmuffinsecret said:
Well, that's a good start, at least I am not the only one!
Have you tried to connect your device via USB? My laptop can see a connected device but it can't recognize it and I hear some sounds coming from the tablet when I try to hold the `power` button. This made me think that it can be a display/screen related, so the device works but we can't see it due to the broken screen/display. Don't know how to check that though.
Click to expand...
Click to collapse
Try replacing the screen, just to check. If that doesn't fix it, at least you have a brand new screen!

I'm currently having the same issue, haven't used it in 6 months and when I tried to turn it on, nothing happens
---------- Post added at 09:39 PM ---------- Previous post was at 09:32 PM ----------
Planters76 said:
I'm currently having the same issue, haven't used it in 6 months and when I tried to turn it on, nothing happens
Click to expand...
Click to collapse
I fix mine,
let it sit on the charger for a hour, then hold down the button for 20 sec

same issue here as well ive had it for about a year and im not able to access anything via my pc google help forums had no answer either, looks like we may be screwed..........

Hi, I just had same issue with my tablet only thing is that I was using it with ~20% of battery, nothing special - browsing the web using chrome, then the screen lit gray and shut off. After that no response either from charger, holding power button for 60+ seconds didn't work either, tried re-connecting the battery, still with no signs.
And then, I tried to plug in the charger and then pressing VolumeDown+Power immediately after connecting the charger. Suddenly got some response, that battery charging icon appeared, and it shows my battery charging, but from 0%. Still waiting to charge a bit until I can try to boot it.
I'll update this post with any news.
EDIT: When I connected my tablet to the charger it had that hissing sound, but after few minutes it stopped.
After 15 minutes of charging I managed to boot my Nexus7 with 7% of charge in it a that moment, It seems to work for now.
Summarry of what I did to solve my problem:
1. Opened the back of the N7 (I used a guitar pick for this) and re-connect the battery.
2. Then plugged in the charger and at the same time pressed VolumeDown+Power, battery icon lit up but went out, repeated step 1, and then step 2 again gave me animated battery charging animation which showed up for like 10 seconds
3. Waited for 10-15 minutes and tried to boot normally. And it works now

MrBratka said:
Hi, I just had same issue with my tablet only thing is that I was using it with ~20% of battery, nothing special - browsing the web using chrome, then the screen lit gray and shut off. After that no response either from charger, holding power button for 60+ seconds didn't work either, tried re-connecting the battery, still with no signs.
And then, I tried to plug in the charger and then pressing VolumeDown+Power immediately after connecting the charger. Suddenly got some response, that battery charging icon appeared, and it shows my battery charging, but from 0%. Still waiting to charge a bit until I can try to boot it.
I'll update this post with any news.
EDIT: When I connected my tablet to the charger it had that hissing sound, but after few minutes it stopped.
After 15 minutes of charging I managed to boot my Nexus7 with 7% of charge in it a that moment, It seems to work for now.
Summarry of what I did to solve my problem:
1. Opened the back of the N7 (I used a guitar pick for this) and re-connect the battery.
2. Then plugged in the charger and at the same time pressed VolumeDown+Power, battery icon lit up but went out, repeated step 1, and then step 2 again gave me animated battery charging animation which showed up for like 10 seconds
3. Waited for 10-15 minutes and tried to boot normally. And it works now
Click to expand...
Click to collapse
Thanks mine was taking forever to charge so I unplugged the battery waited a few minutes and then it worked it charged faster
Sent from my SM-N920V using XDA-Developers mobile app

MrBratka said:
Hi, I just had same issue with my tablet only thing is that I was using it with ~20% of battery, nothing special - browsing the web using chrome, then the screen lit gray and shut off. After that no response either from charger, holding power button for 60+ seconds didn't work either, tried re-connecting the battery, still with no signs.
And then, I tried to plug in the charger and then pressing VolumeDown+Power immediately after connecting the charger. Suddenly got some response, that battery charging icon appeared, and it shows my battery charging, but from 0%. Still waiting to charge a bit until I can try to boot it.
I'll update this post with any news.
EDIT: When I connected my tablet to the charger it had that hissing sound, but after few minutes it stopped.
After 15 minutes of charging I managed to boot my Nexus7 with 7% of charge in it a that moment, It seems to work for now.
Summarry of what I did to solve my problem:
1. Opened the back of the N7 (I used a guitar pick for this) and re-connect the battery.
2. Then plugged in the charger and at the same time pressed VolumeDown+Power, battery icon lit up but went out, repeated step 1, and then step 2 again gave me animated battery charging animation which showed up for like 10 seconds
3. Waited for 10-15 minutes and tried to boot normally. And it works now
Click to expand...
Click to collapse
This helped me get my N7 2012 back up and running, too. Thank you so much!

We are not alone
topmuffinsecret said:
Hi guys,
My Nexus 7 (2012) turned off(not properly) when the battery level was low and won't power on. I tried a battery from a working tablet and tested my battery in another tablet. It seems like the issue is somewhere else.
These are the things I tried:
- leave it for a couple of hours charging (no battery sign at all)
- hold the power button with/without the volume levels while it being both connected and disconnected.
- tested my battery in another tabled and put a fully charged battery from another tablet
- made sure that the battery is connected
There was one more thing I tried - to press the Power button with no battery inside but the tablet being connected to a laptop via the USB cable. One could hear something like a boot noise coming from the tablet (doesn't happen when the battery is inside)
In December, 2015 I installed a Custom ROM with android 5.1.1 which I found here http://forum.xda-developers.com/nexus-7/development/android-6-aosp-grouper-t3268172/ (the thread was renamed and is now about the Android 6 update) The tablet worked fine for these 3 months but one day when I was checking my email it went off and won't respond to any actions.
Could you please help me to fix it? I'm just not ready to give up on this tablet. Thanks!
Click to expand...
Click to collapse
I have done same, Mine is , My son had it and ran it to 0%, charging port was iffy, put new one charging port in this morning, nothing, not even battery DEAD sign, nothing tried power, button / volume trick , I did notice on the power/volume button, there is a 4th, anyone have a clue, cannot find what im looking for to answer that.
I have a smart young co-worker looking at it for me right now.

cdb2643 said:
I have done same, Mine is , My son had it and ran it to 0%, charging port was iffy, put new one charging port in this morning, nothing, not even battery DEAD sign, nothing tried power, button / volume trick , I did notice on the power/volume button, there is a 4th, anyone have a clue, cannot find what im looking for to answer that.
I have a smart young co-worker looking at it for me right now.
Click to expand...
Click to collapse
Probably this post can give you some ideas how to recover your device.

AndDiSa said:
Probably this post can give you some ideas how to recover your device.
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Click to collapse
Honestly, I do not think it is the battery, I can see the Charge signal, and the Battery is showing 1,784 VDC tested unplugged and disconnected, my smart young co-worker seems to think POST is failing, I still never see a "Charging" indication.
Does anyone know , Is there a fail safe, say the battery is disconnected, and usb charger is plugged in, will i just see all 5VDC at the sub port, ?
I never see a screen flicker, DEAD battery sign, nothing.
co-worker, tried some things that made sense when he explained what he did, I would have to agree with him.
Now it is rooted, 4.x something I forget, Never went to 5.x did once early and did not like it, Back stock, ran 2 days no issues, Rooted again, 4.x still do not remember, worked great 3-4 months, Sons ran it to DEaD and that was it, put it up for 90 days or so, wife got new tablet, kids have Fire each, and here i am tabletless, CRAP, did not want to throw to much $$$$ at this thing, nor did I want to buy a new one.
Samsung Tablet here we come.
any body want this Nexus 7, it is a 2012 model.

cdb2643 said:
Honestly, I do not think it is the battery, I can see the Charge signal, and the Battery is showing 1,784 VDC tested unplugged and disconnected, my smart young co-worker seems to think POST is failing, I still never see a "Charging" indication.
Does anyone know , Is there a fail safe, say the battery is disconnected, and usb charger is plugged in, will i just see all 5VDC at the sub port, ?
I never see a screen flicker, DEAD battery sign, nothing.
co-worker, tried some things that made sense when he explained what he did, I would have to agree with him.
Now it is rooted, 4.x something I forget, Never went to 5.x did once early and did not like it, Back stock, ran 2 days no issues, Rooted again, 4.x still do not remember, worked great 3-4 months, Sons ran it to DEaD and that was it, put it up for 90 days or so, wife got new tablet, kids have Fire each, and here i am tabletless, CRAP, did not want to throw to much $$$$ at this thing, nor did I want to buy a new one.
Samsung Tablet here we come.
any body want this Nexus 7, it is a 2012 model.
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Click to collapse
I would be more than happy to take it off of your hands mate. Probably gonna use it for parts to keep mine running.