[Q] Battery/corruption issue - Nexus 7 Q&A, Help & Troubleshooting

This is a bizarre problem for me that's I can't find solutions to anywhere else. I have a 32GB Nexus 7 (NOT the 2013 variety) running Android 4.3. I've never rooted this tablet before, everything is original and I've never seen any issues with battery or screen performance before. After using my tablet during class with no problems and an 80% charge, I turned it off, traveled 10 minutes to a meeting, and pulled it out of my bag to turn it on. The screen didn't turn on, so I held the power button to soft rest it. Nothing happened, so I tried booting into the bootloader by holding down power and volume down. No luck there either. I plugged it into my computer and got an error message saying "USB device has malfunctioned". I tried using adb to reboot it or reflash a stock ROM with no luck, as the command prompt couldn't find my device. If I performed a soft rest or unlplugged my tablet from the computer, I would get a chime indicating that a USB device had been disconnected.
Does anyone have any suggestions with how I could proceed troubleshooting from here? I suspect there's probably a hardware issue, but that doesn't make much sense, since it was in a protected pocket for only 10 minutes and stopped working. Any help would be greatly appreciated.

Related

[Q] Nexus 7 - no display, no boot, nothing

I've had my nexus 7 for about 3 weeks now. Was working great until last night. I haven't altered it such as rooting or custom ROM since I bought it. Besides some apps I have installed via the play store, it can be considered very very factory stock.
Battery was low and it started the automatic shut down because the battery level hit the critical point. It shut down and then I plugged it back in and turned it back on. It was halfway through the boot up (showing the multi-colored X) and the screen went blank and I heard what could be a farting sound, then nothing.
I've tried holding down the power button for more than 30 seconds (timing it on my watch) and I've tried the power button and both volume up/down buttons in the same manner. Nothing.
I let it charge overnight on the factory charger with factory cable. No change.
I opened the back up and disconnected the battery for a few minutes then reconnected. No change.
I plugged it into my computer and it detects and I was able to install the drivers for "Asus Transformer Prime APX Interface". If I hold the power button for 10 seconds while it is connected to my PC the PC detects that the device is disconnected and then reconnected about 5 seconds later. So the device does something.
I tried using the android-sdk to communicate with the device but nothing. ADB doesn't detect the device, fastboot doesn't either.
At this point, I'm thinking the device is as hard bricked as can be but hopefully someone here can tell me otherwise. If I don't get a response within a week, I will be attempting to get a replacement - my wife bought it brand new for me from a private seller on eBay, so I don't have an actual store to return it to.

[Q] Nexus 4 now Hard Bricked, stock, It destroyed itself

Hello,
I have been having a few odd issues with my Nexus 4, random reboots, no sound from speakers unless a reboot. Anyway Last night I had it on charge and it started rebooting itself in a loop so I managed to break the cycle and I ended up on a screen with a android on its side with a big arrow pointing at the power button, so I pressed the power button and it rebooted and was sat on the Nexus 4 logo.
I left the phone doing that and when I came back a while later the phone was still on the Nexus logo (which was still animating) but the phone was roasting hot, I turned the phone off by holding the power button.
Anyway, now the Nexus will not turn on, when it is plugged into a power source I get a red LED for a couple of seconds and then it goes out. In device manager I have qhsusb_dload in device manager.
I have done many hours of searching, I tried a few things suggested on other posts using Ubuntu but nothing.
This was a stock device that had only ever been updated with official updates. I can send it back no problem but I thought I would try save everyone's time and effort and see if there was anything I could try.
Thanks
qhsusb_dload stands for Qualcomm high speed download mode. Theres nothing you can do, other than a jtag. Sorry

[Q] Can't Power On

I was using the Nexus Root Toolkit v1.7.9 to flash stock back onto the device when it hung. Went to a black screen and then refused to power on. To elaborate, it will not display a battery icon when on the charger, nor can I get the device to display anything on the screen with any button combination. No fastboot. No twrp. Nothing. The only sign of life I have gotten from it is when connecting a usb to my computer (Windows 8.1) and holding down the power button on the device, I can hear it "connect" to the computer. In device manager, it shows up as APX. It had previously been shown as a USB device that could not return an ID...or something to that effect.
Without being able to boot the device up, I am clueless as to what to do. I have tried charging it for an hour. I have tried all button combinations, along with holding them for various lengths of time. I am just out of ideas and can't seem to find anyone else experiencing this exact issue.
Is anybody with more experience able to point me in the right direction?
Thanks in advance.
This happened to me awhile ago. When I first started to read about this issue it was that the battery becomes lose causing this issue. Another is just letting it sit idle for so long and no matter what the battery level it would cause this as well. Sorry can't remember all the technical stuff on that one.
I eventually contacted asus and sent it back. About two weeks later I was sent a new one.
Sent from my SCH-I545

Can't turn on the brand new YD206

Hello,
I received the YotaPhone 2 (YD206) today.
The box was sealed.
When I tried to turn on the phone, it didn't start. I thought it was empty so I put in on charger for 2 hrs.
After that I tried again , but still nothing happened -- i was holding power button multiple times, as long as 5 minutes at the time, but there was simply no response -- no vibration, no sound, screen remains black (not turned on), anything at all.
I tried different chargers as well (Xiaomi and Samsung one) -- they weren't working with this phone either.
When I connect phone to a PC, I just hear sound that something is connected (I saw installing drivers notice first time I connected it), but nothing happens at all. I don't see the phone in my computer or anywhere else.
Is there way I can fix this somehow? What else can I try?
Thanks!
You can try unlocking the bands like described here.
Not sure it will help but you can at least try.
http://4pda.ru/forum/index.php?s=&showtopic=550302&view=findpost&p=55303436
fly20 said:
Hello,
I received the YotaPhone 2 (YD206) from coolicool.com today.
The box was sealed.
When I tried to turn on the phone, it didn't start. I thought it was empty so I put in on charger for 2 hrs.
After that I tried again , but still nothing happened -- i was holding power button multiple times, as long as 5 minutes at the time, but there was simply no response -- no vibration, no sound, screen remains black (not turned on), anything at all.
I tried different chargers as well (Xiaomi and Samsung one) -- they weren't working with this phone either.
When I connect phone to a PC, I just hear sound that something is connected (I saw installing drivers notice first time I connected it), but nothing happens at all. I don't see the phone in my computer or anywhere else.
Is there way I can fix this somehow? What else can I try?
Thanks!
Click to expand...
Click to collapse
Sounds like the phone is defect. The only thing I can think of is that it somehow freezed up and you will need to let the battery drain so all power is off the phone and then try to recharge it. Draining the phone completly without screen use can take up to 7 days.
I finally managed to turn it on,by keeping it on charger for whole day and night and after a couple of attempts it was on.
I thought battery voltage was pretty low which prevented it from turning on.
I used a phone for a day, completely discharged it and then recharged it to 100% again. I thought everything is gonna be good now.
Then I wanted to upgrade to Lollipop, I decided to use YotaFlasher to flash EU KitKat first, and that worked fine. After that, I used OTA update to download Lolipop.
Download finished, and I was offered to "restart device and apply update", but as soon as I confirmed, the device went off and I can't turn it on anymore. What the heck is happening with this yotaphone? (battery was at 97%)
I can't turn it on, restart, put in download or recovery mode, get it to charge or get the screen on. Also PC don't recognize it *AT ALL* -- not even sound that something is connected. It looks completely dead (again).
Any ideas what I can do to fix my new problem?

Nexus 7 Dead (as in, totally dead!)

Hey guys, I signed up here because I'm desperate for help!
To cut a long story short, I upgraded my N7 (wifi 2012 model) from 4.4.4 to 5.1.1 which was an awful idea as performance was through the floor. So I used the ADB tools to flash and downgrade back to a stock 4.4.4 image from the google repository.
Unfortunately, after flashing I tries to get to the recovery mode (was on the boot loader) and it said "error", wouldn't let me go any further and just kept me in the boot loader menu. I rebooted the device thinking it might have just needed a gentle shove, but it didn't reboot...it turned off after using the power off command.
Now when I "try" to turn the device on I get a black screen and nothing else. To confirm, this isn't the usual battery related "black screen" with grey static and the enabled backlight caused by long term discharge. The screen is totally black, no matter what key combination I use there is no visual response. The only time I can generally see any sign of life is when It's plugged into my laptop - windows plays the "new device detected" chime, but ADB can't see it and about 90% of the time windows states there was a device error. At this present moment the device is powered on (again, no visual sign) just a chime and an active driver showing in devmgmr for "Android ADB Interface".
ADB - Any attempt to use ADB fails and shows "no device found / connected", I've tried multiple solutions such as the nexus root kit but they all have the same issue, they just can't talk to the device. I know it's not the laptop at fault because it was detected fine multiple times prior to flashing it?
There is something alive in the device in terms of powering it off and off as holding the power+vol down button does do enough to trigger the windows chime to indicate it's powered on, but windows can't do anything with it at all. Note the device was 95% charged during the flash so it's not like it crashed mid way.
Any help would be appreciated, it'd be a shame to bin it
Thanks
Lawrence
Take the back off and disconnect the battery. Press the power button to discharge any leftover charge. Plug back in the battery, then try powering up in bootloader mode.
Sent from my LGLS991 using Tapatalk
Hi Psiphi,
I did as you suggested, took the case off and disconnected the battery cable - pressed and held the power button in different combinations to make sure it discharges any remaining power.
Sadly, no change - any attempt to power it on results in the same lack of response
Anything else to try?
Thanks
You might try forcing a flash using the Nexus Root Toolkit, but otherwise I am out of ideas short of buying new hardware.
Sent from my LGLS991 using Tapatalk
I agree use nexus toolkit, use the force flash mode... I recovered mine about 6 months ago it was dead... Nothing worked...
Sent from my LG-H811 using Tapatalk

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