[Q] N7 Failure - Nexus 7 Q&A, Help & Troubleshooting

Had my N7 for well over a year, rooted, unlocked bootloader, all of a sudden it wont turn on... If I plug it in I get a blue screen, unplugged nothing..
Any Idea's out there?

mojimmy said:
Had my N7 for well over a year, rooted, unlocked bootloader, all of a sudden it wont turn on... If I plug it in I get a blue screen, unplugged nothing..
Any Idea's out there?
Click to expand...
Click to collapse
Try opening the back panel of your nexus and unplug and replug the battery.

Leonhan said:
Try opening the back panel of your nexus and unplug and replug the battery.
Click to expand...
Click to collapse
That did it...I usually just thump it on the side and it works...N7 flaw, thanks for your help..

I was reimaging my device from 4.4 back to 4.3 (since Kit Kit broke flash videos). Stupid me, I told it NOT to wipe my user data (even though I backed everything up, including the internal storage device). When it rebooted, the X logo was there, but it never would boot up. I'm assuming because it was because I should have wiped data. Oh, and it was fully charged before I did the reimage to 4.3.
Well, I tried to reboot it (did the reset) to try and get into the bootloader which I did. I wipe the cache only and then rebooted and that was it. Blank screen and nothing else. I can't tell if it's turned on or off. Plugging the charger into the wall outlet doesn't elicit any type of response on the screen. Usually, the screen turns on if it's already on or else, if it's off, you get the battery icon. Neither one happens.
The screen is blank (even when I press and hold power+vol up+vol down. I've hooked it up to the PC to see if I could hear at least the sound when it powers down on the reset and it does indeed do that. Then, it connects and then I get a different sound and the PC says it cannot identify the USB device connected when before all of this happened, it was working just fine (had to since I JUST used the N7 tools to flash back to 4.3).
I've also left it hooked up to the original wall charger for over an hour and nothing. Screen is still blank and never comes on no matter what I do.
I've also opened the back up (hopefully they can't tell if I've done this or not) and unplugged the batter, waited and plugged it back in. Still nothing.
I've uninstalled all the drivers, rebooted and tried it again. After it installed the drivers, still the same issue. It worked for almost a year. Luckily, I purchased the N7 on January of 2013, so I'm still under warranty.
Here's the problem: I unlocked the bootloader. Will this void the warranty? Am I hosed if I try to RMA it? I cannot get connected back to to an fastboot oem lock on it. N7 toolkit is useless (well, NOW it is since I have a non-functioning device), so I cannot do anything there.
I'm just trying to see if there is anything else I can do or is the N7 fubar'd? If so, does this mean they won't be able to keep my data (which is fine by me)? I would hate for them to boot it up and see the unlocked icon on the screen and then come back at me for money.

Related

Bell Vogue keeps rebooting

Hi everyone,
I have had some trouble with my Vogue. At first it simply would not turn on. I would get a red light when I plugged the phone in to charge it. I have been using my old phone for several months now. Today I went out to the nearest Bell store and it seems like anything new is going to cost in the $500 area because I still have 1 year left on my contract. So I have renewed my interest in getting my Vogue working again
The original thread describing my original problem (with the red light) is here:
http://forum.xda-developers.com/showthread.php?t=546674
I purchased a new battery and now when I plug it in on the USB I can turn it on (no lights, red, green, or otherwise) but it does turn on. It boots up just passed the blue “Bell” splash screen and then reboots. It does this over and over again.
I am able to get into the boot loader screen by holding down the power and camera buttons and pressing the reset button.
Any ideas on what I can do? Any suggestions are welcome.
Regards,
The Fish
Reflash your rom when you get to the bootloader screen.
If you are unlocked flash nfsfan or whatever, just rename the nbh file to 'VOGUIMG.nbh' and it will flash.
If you were on stock you'll need the nbh from the stock package.
OK, here is an update
I have tried a hard-reset (press Send and End buttons at the same time and press reset button). This worked but the phone still kept rebooting. Tried the original battery, phone booted a little further up before rebooting.
I got the phone into boot loader mode and left it plugged in on the USB cable for a few minutes. This time when I rebooted I became ecstatic. I got all the way to the “align your screen” stage before hearing the “phone is dying” sound and the phone turned off. So here is what I think may have happened:
I have long lost the home charger kit. So I have, for as long as I can remember, been charging it by plugging it into a PC via the USB. This is fine except that Windows will only power the USB for the device if there is a driver installed. The device/phone looks different to Windows when it is in boot loader mode then when it is fully booted up. If the device is so dead as to not even have a flicker of life I don't think Windows sees it.
I have been doing this tonight under Linux. Linux seems to either have the driver, a more generic driver or powers the USB all the time for any device. I noticed this same behavior when charging my Moto Razr the same way. Under Linux it just worked by plugging it in. Under Widows I had to install the driver. So maybe here is what happened.
The battery got SO dead that it was not able to boot the phone up far enough for Windows on the PC to see it, recognize it and begin powering the USB port. Perhaps leaving the phone in bootloader mode and plugged into a Linux box got the battery a little more charged till I got to the point of being able to align the screen.
Anyway, I am more then ever convinced that this is some kind of battery/power issue. The phone is now lying here powered up and charging (already at 20%). The carrier customizations ran, rebooted while I crossed my fingers, and came back up. I even called *BELL and got a message about activating my phone. Tomorrow if the phone is charged up and behaving normally I will get an ESN change done and be back in the world of decent smartphones. Man have I ever missed my Google Maps
The next step is to flash a more up-to-date ROM... if I dare mess with a good thing.
The Fish

[Q/Help] Phone will not turn off...?

When I turn off the phone, it vibrates to let me know it is off, and then it waits two seconds or so then turns itself back on.
I have done hard reset after hard reset, put the latest KE8 on and it still does it. Could it be a battery fault?
Do you have Advanced Power Menu installed?
Nope. It is now not letting me switch it on unless plugged into the charger.
If I switch it on away from the charger, it shows me a battery on the screen with a flickering yellow warning triangle with a thermometer next to it.
Any thoughts?
sorry to hear that!
i've had this problem about one or two months ago, after i flashed a new rom (can'r remember which one, was it lightning?). did almost everything i could
imagine (flashed other recovery, kernel, modem) and nothing helped. also a
complete fresh install (wipe everything before) didn't solve this!
the only thing which worked for me was to go back to my old rom. after that
everything was fine again!
so, i cannot say what causes this, but if you flash another rom it should work again! if not, try to repartition with odin, using one of the provided PIT files!
yep also had this problem when i first flashed cognition. my phone would reboot after turning it off. and if the battery went dead, when i plugged it into charge it would turn itself on instead of going to the battery charging screen. all i did was reflash the rom and all was fine.
This morning I updated to Android 2.3.4.
If I root like this:
http://androidflip.com/root-samsung-galaxy-s2-android-234-xxkg1-firmware/
Will it help do you think?
Just to update, it seems to be resolved now using this:
http://www.theandroidsoul.com/root-xxkg1-android-2-3-4-firmware-rom-on-galaxy-s2/
Thanks for your help guys!
And now its doing it again lol
I can live with it, but a couple of things like it thinking there is a USB cable connected seem to happen every now and again...?
hmm thats the same way as i did it but i didnt do the yellow triangle trick so im not sure about that. everything else is standard, thats how i flashed my rom and i only had your problem the first time i flashed. did you do the yellow triangle removal?
I did the remove triangle thing yea.
I do think it is a problem with the USB connector, it could be touching itself inside, possibly causing a shortage as it occasionally thinks a USB cable is connected.
So, if I turn off, it could be thinking that the charger has initiated connection and starts up to charge, but can't charge so just continues to boot.
I have plugged the usb cable in and with nothing at the other end, and nothing pops up. So it could be something like what I suggest. It has been ok for an hour or so now so fingers crossed lol!
lol that cud be it then. it wud make sence. might wanna get that looked at tho if you dont wanna risk damaging the phone. if its doing what you said, then it cud end up killing the phone if it shorts it out permantly. let me know how its going in a day or so.
Even on lock screen if you press and hold the power button for 8 seconds the phone does shut off, is it happening for ya?
I had this a few weeks back. Reflashing cf root kernel fixed mine.
minty1978 said:
I had this a few weeks back. Reflashing cf root kernel fixed mine.
Click to expand...
Click to collapse
Likewise, solved my problems with the phone rebooting itself instead of turning off.

[Q] Desperate for help!

Bought a 16 GB Wifi Samsyng Galaxy 10.1 Tablet from a friend. Not rooted. Was working fine until I upgraded to the stock 3.2 from Samsung. Now, it won't boot unless it's pugged into the wall charger. The battery says its at 100%, but it goes immediately off when I unplug it. It won't boot at all....not even into recovery unless it's plugged in. The computer wont recognize it when using the USB cord and it won't do anything.
Can the software do weird things to the battery? What do I do? I can use the wall charger, boot into recovery, wipe data and factory reset....then setup my google account and it works fine....until I unplug it. Then it goes black immediately.
I'm not a noob, (several Android phones, all rooted and custom Roms flashed...thx XDA).......but I'm stumped on this one.
Pease help.
Try going back to 3.1 and see if it goes away, or try a Custom Rom. Task14 is very stable and reliable to test with
as long as you can turn it on, you are safe. Like above said, install Task14 rom!!
badboy47 said:
as long as you can turn it on, you are safe. Like above said, install Task14 rom!!
Click to expand...
Click to collapse
Thanks for the suggestions....but since I can't get the tablet to do anything while it's connected to the computer, how do I get the tablet rooted or even get the 3.1 or a custom Rom onto the tablet?
I plugged it in again last night (with wall charger)....it showed the battery as 100%....then it vibrated and the screen faded (as it's supposed to do). It won't turn on when you press the power button only.....not even if I hold it down to force a reboot. So I have to boot it up by using the power button and the down volume key combo. From there, I wiped the cache, and did a factory reset. (all this time it's plugged into the wall charger) Then when it rebooted and I was able to set it up with the Wifi, Google account, market access, etc. I even played a game and went to You Tube and watched a couple videos just to make sure it was working. Everything was working perfect (as long as it's plugged in to the wall charger). I left it alone for several hours to see if the battery was just reporting 100% but in fact was NOT at 100%. The screen went black, but would come back on when pushing the power button quickly (as it's supposed to do) So I left it like that overnight. This entire time the battery was reporting 100%.
This morning, I quickly tapped the power button and it came back up (still plugged in). Working great. As soon as I unplug it from the wall, it went black and now it won't do anything.
It won't boot or do anything using the USB cord and the computer. How do I get the new ROM or old stock 3.1 onto the dang thing if I can't get it connected?
This thing is frustrating me.

Was the problem hardware or software?

Okay so here's the story.
I was running pacman 4.3 nightly roms on my tablet.
At some points id have this weird issue where out of nowhere I would start bootlooping (and bc of some weird issue i couldnt boot into recovery from the bootloader unless i was plugged in to a pc. idk it was weird. the bootloader was like 3.13 or whatever)
anyway, yesterday my battery drained completetly and I would do what I would normally do, plug in to my pc, boot into the bootloader, boot into recovery and let it charge a little bit, then i would reboot into the system. but this time it would die during the splashscreen, so that was weird. Anyway, I eventually got it past the splashcreen onto my homescreen and my battery was apparently at 0 percent and then it would just die even tho I was plugged in.
i could leave my tablet in recovery for a while without being plugged in which was weird.
Anyway I tried flashing a newbootloader. 4.23 or something and it successfully flashed, now it wont boot up. fancy paperweight in my hands lol
lsusb command on my linuxbox gives me nothing. RIP nexus7, its been real.
oh and i did everything through adb
and before it died, whenever i plugged it in to usb or my power adapter, some strange sounds came from inside the tablet, like static lol
update, i had it plugged in and not even the charging screen was coming up so i was just there holding the power and volume buttons then the charging screen came up and went away. hmmmmm
The usb cable works fine for file transfers/being detected on my linuxbox on my s3 and evo so its not the port or cable
another update.
charging screen now comes up and stays on for a while. guess its an issue with a port on the tablet, but whenever i power it on or try to get to the bootloader the screen goes black for a second then back to the charging screen. so Im guessing this tablet is done for and shouldnt bother trying to fix the port?
deleted.
Is it still under warranty (less than a year old from when you purchased it)? If so, RMA the sucker. That's what I did and they replaced the motherboard for me.

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?

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