Related
I thought I'd clean up the OP for folks who got here with similar issues as me since it seems more common than we'd like.
Scenario:
Phone does not turn on without the charger or USB plugged in.
When plugged in, it boot loops at the Google logo (i.e. turns off at the logo, and reboots) and gives what is beginning to be referred to as the the 'red LED of death'--where the LED just blinks read.
The bootloader is accessible when plugged in. But trying to boot into recovery causes a loop. If you try to enter recovery, the phone has to turn off then boot back into recovery. But turning off means that when it turns on it will loop at the Google logo. So, booting into recovery is NOT an option.
Download mode is also accessible when plugged in.
Since the bootloader is accessible, it is possible to flash the factory image to the phone, however, doing so does not resolve the boot loop, nor does it allow the phone to turn on without being plugged in.
Fixes which have worked for some people
Instructions in this post worked for a couple people. NOTE: you have to be able to get into the bootloader for this to work.
One person who left it in download mode plugged into the PC (which was off) overnight, and somehow the problem was resolved. Thread here.
Here's a post in this thread from a user who was able to get it booting up again by leaving it on the charger for a bit.
You fool.
abnormalreply said:
In sum: I started using the Faux kernel with AOKP. OC'd to 1.6Ghz and started Antutu. Phone crashed and now it doesn't boot. When I plug in the charger, there's the battery icon with the lighting bolt which I think indicates that the battery is dead. But it's not dead, it was around 95% when I started Antutu. So, it's constantly turning on and off showing that battery icon while plugged in, but doesn't start up. Anything I can do about this?
Also, the computer only detects it briefly, before the phone turns off again, so ADB/fastboot/toolkit seems out of the question, because it doesn't stay detected long enough to do anything.
Click to expand...
Click to collapse
Tape the power button down so it goes into a power cycle. Leave it until the battery is totally dead. Then plug it into the wall outlet, let it fully charge. Then try turning it on.
Sent from my Nexus 4 using xda premium
Your computer only detects it briefly? perhaps it'll detect it if you boot into Bootloader mode (not sure if you were able to from reading the OP)
Press and hold volume down, volume up, and power until the device boots. If you successfully enter Bootloader mode you can find steps on how to return to stock here: http://forum.xda-developers.com/showthread.php?t=2010312
overhauling said:
Your computer only detects it briefly? perhaps it'll detect it if you boot into Bootloader mode (not sure if you were able to from reading the OP)
Press and hold volume down, volume up, and power until the device boots. If you successfully enter Bootloader mode you can find steps on how to return to stock here: [/QUOTE]
Yeah, it would be nice if...en if I get into the bootloader for a second.
Click to expand...
Click to collapse
abnormalreply said:
In sum: I started using the Faux kernel with AOKP. OC'd to 1.6Ghz and started Antutu. Phone crashed and now it doesn't boot. When I plug in the charger, there's the battery icon with the lighting bolt which I think indicates that the battery is dead. But it's not dead, it was around 95% when I started Antutu. So, it's constantly turning on and off showing that battery icon while plugged in, but doesn't start up. Anything I can do about this?
Also, the computer only detects it briefly, before the phone turns off again, so ADB/fastboot/toolkit seems out of the question, because it doesn't stay detected long enough to do anything.
Click to expand...
Click to collapse
i am on the same boat. i already contacted CSR anh they will send me a new one. after flash new kernel and start antutu, the n4 crashed and completely dead.
I'm pretty sure the battery with the lightning bolt means its charging.
Sent from my Nexus 4 using Tapatalk 2
ntt1409 said:
i am on the same boat. i already contacted CSR anh they will send me a new one. after flash new kernel and start antutu, the n4 crashed and completely dead.
Click to expand...
Click to collapse
Omg.. you don't need a replacement. Stop trying to load roms and kernals if you do not know how.
sent via xda premium with nexus 7
Ulver said:
I'm pretty sure the battery with the lightning bolt means its charging.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Yeah, but it's already full charged. Even if I leave it on the charger for a while, it still doesn't start up
KonstantinKeller said:
Tape the power button down so it goes into a power cycle. Leave it until the battery is totally dead. Then plug it into the wall outlet, let it fully charge. Then try turning it on.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
I would say try this to drain the battery. Then charge it and see what happens.
So how exactly did the phone brick? Just so everyone here knows what not to do. Is it the kernel that caused it since its still in experimental stages?
Sent from my Nexus 4 using xda premium
abnormalreply said:
In sum: I started using the Faux kernel with AOKP. OC'd to 1.6Ghz and started Antutu. Phone crashed and now it doesn't boot. When I plug in the charger, there's the battery icon with the lighting bolt which I think indicates that the battery is dead. But it's not dead, it was around 95% when I started Antutu. So, it's constantly turning on and off showing that battery icon while plugged in, but doesn't start up. Anything I can do about this?
Also, the computer only detects it briefly, before the phone turns off again, so ADB/fastboot/toolkit seems out of the question, because it doesn't stay detected long enough to do anything.
Click to expand...
Click to collapse
Have you tried reflashibg or using your nan droid back up from the recovery console?
Just because our won't not does not mean it is bricked.
It is really ticking me of that many people do not even have our phones and you are exchanging because of ignorance. Surely all these exchanges must impact stock. I know they keep extras but how many?
Stop messing with things you know nothing about until you at least learn..
sent via xda premium with nexus 7
abnormalreply said:
Yeah, it would be nice if I could get into the bootloader :/
But as I mentioned, it 'thinks' the battery is dead so it just keeps turning on and off even if I get into the bootloader for a second.
Click to expand...
Click to collapse
That's the point. It'll turn on and off until the battery is ACTUALLY dead. Then, charge it fully, and try to start it.
Dude this happened to me last night! Same ROM kernel combo! And fired up an tutu after ocing point is this should not be happening just made a thread and seen this here! Freaky! I'm telling u people beware something is up for sure been doing this a long time never seen this before
First if you have an unlocked bootloader, your replacement won't be free. As soon as Google gets it and realizes it's unlocked they will charge you full price for your replacement.
Second, Nexus devices are next to impossible to brick. There is probably a way to reset the device. I would try first unplug the device from your computer or charger and try holding the power button for a full 15-20 seconds. Then try booting into bootloader or recovery. If that doesn't work, try holding volume up and power for 15-20 seconds. If that doesn't work, try volume down and power for 15-20 seconds. And if that one doesn't work try holding all 3 down for 15-20 seconds. This sounds like a problem that would more than likely be fixed by removing the battery and rebooting. Since this doesn't have a removable battery there has to be a built in 'hard reset' that will power cycle the phone.
I am willing to bet there is a way to get this working. I guarantee if I had it here in front of me I could.
Also, like someone else has said before, if you are a not good at diagnosing problems, troubleshooting problems, fixing this kind of stuff on your own and adb/fastboot, it makes no sense to be using experimental software on your device. Especially if you plan on pushing its boundaries by overclocking and running benchmark software. If I were you, after you get this straightened out, wait a while until stuff is more ppolished and tested better.
So, by sheer luck, I was able to get into the bootloader and have it stay on. I was then able to use the toolkit (option 9) to flash the google factory stock image. This completed successfully, and I was also able to re-lock the bootloader, but I still have the same problem as I did before: battery charging icon and constant reboot. So, it's completely stock now and the issue is still there. Would it be reasonable to assume that the issue isn't software and I somehow got a hardware failure?
Yo hold power down then plug USB in then right after hold all three button .like after u plus in USB while holding power button then at same time hold volume buttons also this is how I got into download mode.....but.....phone was not detected and comp SD there was a driver failure. But yes dude phone was charged. And I had same exact combo as u I mean same exact. This is why it is freaky. Aokp was fine all day then when I flashed faux test kernel and fired up antutu I just had a flash then nothing. Not blaming anyone of course it was me who chose to flash after all this is custom software and I love these guys work just wish I knew what did it ....like what actually did it
Richieboy67 said:
Omg.. you don't need a replacement. Stop trying to load roms and kernals if you do not know how.
sent via xda premium with nexus 7
Click to expand...
Click to collapse
Seriously... thousands of people waiting for the phone to become available, and people who deserve to have their phone bricked are getting 2nds for free.
abnormalreply said:
So, by sheer luck, I was able to get into the bootloader and have it stay on. I was then able to use the toolkit (option 9) to flash the google factory stock image. This completed successfully, and I was also able to re-lock the bootloader, but I still have the same problem as I did before: battery charging icon and constant reboot. So, it's completely stock now and the issue is still there. Would it be reasonable to assume that the issue isn't software and I somehow got a hardware failure?
Click to expand...
Click to collapse
I was able to do the same thing but it would vibrate then see Google for a sec then nothing and back to a blinking red light....dude this is crazy I can't. Believe this happened to another person the same exact way
dammit. And I was just going to try this combo. Guess that's gonna be a no go.
Last ditch effort is to unscrew the two t5 screws at the bottom and do a real battery pull. Probably wont work, but what do you have to lose?
Ok so I was running paranoid android 3.99 and I've been getting the OTA notices that I need to update. I did that just today, and it downloaded the update and apparently installed it. Then I was stuck in recovery (reboot just kept sending it back to recovery). So I did some googling, decided I should not have tried to OTA and decided I should try to go back to stock and properly flash the rom.
This was my first attempt going back to stock. I downloaded what I thought was the correct nakasi file for my 2012 Nexus 7 (Wifi only, grouper I believe). I got adb and fastboot installed and started sending the prompts. It appears 'fastboot flash bootloader bootloader-grouper-4.23.img" worked properly, but when I tried "fastboot -w update image-nakasi-jwr66v.zip" I got an error and the tablet just kept rebooting into recovery; it would not load past the "Google" screen.
So I put the tablet down (with 98% charge), took my kid to baseball practice and came back an hour later to work on it. The tablet had turned off. Now it appears dead. It does not show a charge symbol when plugged in, and will not power on with "power" or "power and down button." As a result, adb/fastboot does not recognize it.
I thought I had soft bricked it, but now I'm scared I might have hard bricked it. It looks like maybe I installed the wrong nakasi file (the one I installed ended in "v," but the one I just saw from Google ends in "y").
I will try letting it charge overnight and seeing if it will boot in the morning. In the meantime, any ideas, or should I just consider this brick a sign that I should upgrade to the new Nexus (and be more careful)?
Where did you get the stock image? All the official one can be downloaded from here: https://developers.google.com/android/nexus/images#nakasi
If you can boot into bootloader, you can flash the proper image with fastboot, of not, then your device is hardbricked.
If you are worried about a flat battery then you can check it with a voltmeter the voltage should be between 3.6 and 3.7 if the tablet won't charge the battery you could manually charge it THIS IS DANGEROUS the n7 regulates the voltage and current to the battery but if you uses 500mA charger and tape the wires onto the battery and only give it about 30 mins you should be ok . Check the temp of the battery as you do this if it starts to get hot unplug wait for it to cool and go again.
Programming is a race between engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.
Thanks for responding. I charged it overnight, to no avail. I don't think it was hard-bricked, but probably is now that it shutdown and won't recharge or boot.
I unfortunately did not get the file from this site or google, as I should have. I got it from another site I have used before, which was linked to a youtube video on how to return to stock. I thought I followed it exactly, but maybe not.
there is one final thing I'm thinking. when I plug it in to my computer, I am getting the "ding-dong" sound like it's connected. Still, adb/fastboot don't appear to be picking it up. Anything i can do to get it recognized?
It doesn't sound good try plugging it in and holding in the power button for one minute use your watch it can take anything over 30 second's that works on a fully functioning n7 with a completely flat battery to get it to charge not sure if it will work on yours. A bricked device should have the same characteristics as a brick if your computer detects something well a brick can't do that otherwise back to my suggestion of manual charging
Sent from my C5303 using xda app-developers app
You may be in what is called APX mode. Sounds like you might have overwritten the bootloader with the wrong image, which usually means bad news, especially if you can't get into fast-boot mode to write over the image.
Unless it's still under warranty, you can't do much. I had this same problem when I attempted to upgrade to Kit Kat. Not sure what happened, but my tablet was hosed and it only shows up as an APX device. Luckily, it was still under warranty and I was able to RMA it with Asus and they replaced the motherboard free of charge. My purchase date happened to be 11 months prior, so I had about a month left on my warranty. Got lucky.
Try what is suggested in this post: http://forum.xda-developers.com/showpost.php?p=30002160&postcount=10
It might help, it might not. Some have reported trying for a few hours eventually helped get it out of APX mode, but I tried it with mine for days, and nothing helped.
My wife's Nexus 7 suddenly won't turn on... It still had juice when she went to charge it, but the next day found it was totally dead.
I've tried different chargers, tried to get to the bootloader, opened it and unplugged the battery, hooked it up via USB to my computer, etc and nothing will get this thing to power on.
Any ideas?
Bozz5384 said:
My wife's Nexus 7 suddenly won't turn on... It still had juice when she went to charge it, but the next day found it was totally dead.
I've tried different chargers, tried to get to the bootloader, opened it and unplugged the battery, hooked it up via USB to my computer, etc and nothing will get this thing to power on.
Any ideas?
Click to expand...
Click to collapse
I mean, how long did you leave it on AC power? I know when I drain mine since coming to KitKat, it takes as long as a half an hour to respond again.
kcipopnevets said:
I mean, how long did you leave it on AC power? I know when I drain mine since coming to KitKat, it takes as long as a half an hour to respond again.
Click to expand...
Click to collapse
Sorry, it spent more than a day on the charger. Still nothing, cannot get it to respond at all.
Bozz5384 said:
Sorry, it spent more than a day on the charger. Still nothing, cannot get it to respond at all.
Click to expand...
Click to collapse
If you haven't already, try holding the power button for a while until *hopefully* the Google splash appears.
A good way to tell if the device is accepting a current is by using a charger that can verify this somehow, like with an embedded LED. One like this: http://www.verizonwireless.com/accessories/rapid-wall-charger-with-6-ft-cable-for-micro-usb/
I used this for my HTC Rezound when it still worked to make sure it was taking a charge because it would report it was charging in the OS but the charger module itself reported otherwise (the red Verizon ring didn't illuminate unless the charger was positioned a certain way in the device thus this was the only way I could supply it a charge and not hope it wasn't dead in the morning). When my Nexus 7 is drained, it draws enough voltage to get the charger to illuminate so maybe try one of these to really make sure it's still responding.
For the meanwhile, if you do decide to buy one, what was the last thing you/your wife had done? Was there root access?
U need press power for 2 min and need to be pluget into wall
Sent from my Nexus 7 using XDA Free mobile app
kcipopnevets said:
If you haven't already, try holding the power button for a while until *hopefully* the Google splash appears.
A good way to tell if the device is accepting a current is by using a charger that can verify this somehow, like with an embedded LED. One like this: http://www.verizonwireless.com/accessories/rapid-wall-charger-with-6-ft-cable-for-micro-usb/
I used this for my HTC Rezound when it still worked to make sure it was taking a charge because it would report it was charging in the OS but the charger module itself reported otherwise (the red Verizon ring didn't illuminate unless the charger was positioned a certain way in the device thus this was the only way I could supply it a charge and not hope it wasn't dead in the morning). When my Nexus 7 is drained, it draws enough voltage to get the charger to illuminate so maybe try one of these to really make sure it's still responding.
For the meanwhile, if you do decide to buy one, what was the last thing you/your wife had done? Was there root access?
Click to expand...
Click to collapse
Interesting about the charger -- don't think I have one that does that. Maybe I'll see if my VZW store has one, not sure yet.
She had just used her tablet as normal, and plugged it in like she does every other day or so -- the next morning grabbed it and went to work only to find out that it was dead. IE: not turning on.
- No root access (totally stock)
- I've tried holding the power button for up to 2 mins. - nothing
- Even tried holding the down volume and power for up to 2 mins. together - nothing
- Removed the back and unplugged the battery (plug was really tight) and left it undone for 5 mins and reconnected - nothing
- When plugging in to a USB on the computer, the computer dings like I connected something but - nothing
Perhaps I'll take it apart again and see if I can get a voltage reading on the battery with my multimeter... didn't do that before, but would be good to know if it is charged and not turning on or what.
Bozz5384 said:
Interesting about the charger -- don't think I have one that does that. Maybe I'll see if my VZW store has one, not sure yet.
She had just used her tablet as normal, and plugged it in like she does every other day or so -- the next morning grabbed it and went to work only to find out that it was dead. IE: not turning on.
- No root access (totally stock)
- I've tried holding the power button for up to 2 mins. - nothing
- Even tried holding the down volume and power for up to 2 mins. together - nothing
- Removed the back and unplugged the battery (plug was really tight) and left it undone for 5 mins and reconnected - nothing
- When plugging in to a USB on the computer, the computer dings like I connected something but - nothing
Perhaps I'll take it apart again and see if I can get a voltage reading on the battery with my multimeter... didn't do that before, but would be good to know if it is charged and not turning on or what.
Click to expand...
Click to collapse
Remove the back cover, locate the plug to the battery, disconnect plug by sliding from right to left, then replug. Should be fine after that.
player90247 said:
Remove the back cover, locate the plug to the battery, disconnect plug by sliding from right to left, then replug. Should be fine after that.
Click to expand...
Click to collapse
Thanks but I already did that. Nothing changed. If I don't get it going soon I'll be forced to buy something else as she is getting impatient.
I have the same issue.
I bought a refurbish one and it was working great for 2 days and yesterday when I tried to open it, it won't turn on anymore and I was able to browse on it 5 min before.
I tried everything but I cannot find any solution...
When I plug into a wall I cannot see the charging icon and when I plug it into my computer it will do the noise that a device is plug but nothing happen... I wonder if its the battery that is crap
pacostrano said:
I have the same issue.
I bought a refurbish one and it was working great for 2 days and yesterday when I tried to open it, it won't turn on anymore and I was able to browse on it 5 min before.
I tried everything but I cannot find any solution...
When I plug into a wall I cannot see the charging icon and when I plug it into my computer it will do the noise that a device is plug but nothing happen... I wonder if its the battery that is crap
Click to expand...
Click to collapse
I own 3 of these N7 tablets and this has been the number one issue. Sent one for repair when it was under warranty. The supplied Nexus wall charger burn out quick, and aftermarket cables last only 3 months. I've had better results using the Samsung wall charger and cable.
OP, it sounds like your wife's N7 is in APX mode. Connect it to your PC via a USB cable, and open Control Panel's devices and printers panel. If it sees an APX device, and you didn't make NVFlash blobs, your only recourse is a motherboard replacement.
exglynco said:
OP, it sounds like your wife's N7 is in APX mode. Connect it to your PC via a USB cable, and open Control Panel's devices and printers panel. If it sees an APX device, and you didn't make NVFlash blobs, your only recourse is a motherboard replacement.
Click to expand...
Click to collapse
Well, that sounds interesting. Tell me more about the APX device thing. I didn't quite understand.
new nexus 7 2012
Me0211 said:
Well, that sounds interesting. Tell me more about the APX device thing. I didn't quite understand.
Click to expand...
Click to collapse
I just got my new N7 32gb GSM 2012 in the mail today. Won't turn on at all. I'm not going to bother. Going to return it. Quite disappointed, as I didnt realized this issue (apparently with the battery) was so common. Was looking forward to flashing cyanogenmod. Poop. Might just get a samsung tab now, which I think is quite overpriced for its specs.
horsegold said:
I just got my new N7 32gb GSM 2012 in the mail today. Won't turn on at all. I'm not going to bother. Going to return it. Quite disappointed, as I didnt realized this issue (apparently with the battery) was so common. Was looking forward to flashing cyanogenmod. Poop. Might just get a samsung tab now, which I think is quite overpriced for its specs.
Click to expand...
Click to collapse
If you're seriously looking for something other than an N7 then I'd suggest you look at the LG G-Pad.
I bought one for my Dad at Christmas and was amazed by how good the screen is, and the tablet generally, for the price. The LG skin is minimal and can be changed obviously with another launcher, and the battery life is better than my N7.
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
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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!
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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.
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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.
My Nexus 7 2012 suddenly died, trying to use after a long time. It was stuck at loading so I wiped cache and it booted fine was very slow and sort of felt stuck so I rebooted and it never powered on again. It doesnt even show charging battery sign when plugged in. I tried everything nothing worked.
1) Pushed the power button for a minute and combination of other buttons as well
2) Left the battery for charging for hours at least 24 hours
3 Tried charging battery manually by removing it (like mentioned in many youtube videos etc)
I thought battery died but if I connect a small bulb to the battery it works fine, so I do not think battery is dead. What should I do? PC doesnt recognize it but if I plug it in the PC usb port and try to power on the tablet it does make a sound when something is connected to the PC but nothing shows up and it never charges.
What do you think it is? How should I fix this?
anyone?
I think the motherboard has died. The solution is a motherboard replacement.
I was given a Nexus 7 (2012) that had the same problem. The procedure in this video fixed it. Take note that there are two cells in the battery, two red wires and two black wires, you need to charge both cells. I made up a double lead and charged them both at the same time from a Samsung 1.0 amp charger, no problems. The unit now charges to 100% and works fine.
Forum wouldn't let me post a link. Search youtube for "Nexus 7 dead" and check the video by Doug Peng. Worked like a charm for me.
mannesty said:
I was given a Nexus 7 (2012) that had the same problem. The procedure in this video fixed it. Take note that there are two cells in the battery, two red wires and two black wires, you need to charge both cells. I made up a double lead and charged them both at the same time from a Samsung 1.0 amp charger, no problems. The unit now charges to 100% and works fine.
Forum wouldn't let me post a link. Search youtube for "Nexus 7 dead" and check the video by Doug Peng. Worked like a charm for me.
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Hi, mannesty...
I've found this link...
...but here, Doug Peng talks about the Nexus 7 2013 model, the successor to the original Nexus 7 2012, so I'm dubious how much of what he says can be applied to the OP's original 1st generation Nexus 7.
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My view, is that I think the OP's device is hardbricked, with a corrupted or erased bootloader.
From his/her more recent post...
https://forum.xda-developers.com/nexus-7/help/figured-reviving-nexus-7-blob-files-t3983203
This is also highly suggestive of it too...
NexusAd said:
...It doesnt even show charging battery sign when plugged in...
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The charging battery animation, with the device in a powered off state, is part of the bootloader. It's failure to appear strongly suggests the bootloader is corrupted/overwritten/erased and the device thereby hardbricked, and the only tenable solution is a motherboard replacement, as a previous poster here has suggested.
Having said all of that though, it couldn't hurt to have a tinker around with the battery ~ and maybe Doug Peng might have something useful that just might work.
Rgrds,
Ged.
Sent from my moto g(6) using XDA Labs
NexusAd said:
My Nexus 7 2012 suddenly died, trying to use after a long time. It was stuck at loading so I wiped cache and it booted fine was very slow and sort of felt stuck so I rebooted and it never powered on again. It doesnt even show charging battery sign when plugged in. I tried everything nothing worked.
1) Pushed the power button for a minute and combination of other buttons as well
2) Left the battery for charging for hours at least 24 hours
3 Tried charging battery manually by removing it (like mentioned in many youtube videos etc)
I thought battery died but if I connect a small bulb to the battery it works fine, so I do not think battery is dead. What should I do? PC doesnt recognize it but if I plug it in the PC usb port and try to power on the tablet it does make a sound when something is connected to the PC but nothing shows up and it never charges.
What do you think it is? How should I fix this?
Click to expand...
Click to collapse
If your device is still bricked, go check out my guide on How to unbrick.