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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?
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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.
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+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 ?
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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.
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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

[q] tablet froze. Won't turn on.

Hello. I've had nexus for a few weeks now. Tonight i was surfing the Web and the screen started blinking on and off rapidly. It finally shut off. Now it will not boot. I tryed getting into the bootloader by holding volume up and down and power. I get nothing. If I plug it into the charger... The battery icon comes on the screen but that's it. If my nexus fried? Is there anything else I can do?
Sent from my SPH-L710 using xda app-developers app

mattdott said:
Hello. I've had nexus for a few weeks now. Tonight i was surfing the Web and the screen started blinking on and off rapidly. It finally shut off. Now it will not boot. I tryed getting into the bootloader by holding volume up and down and power. I get nothing. If I plug it into the charger... The battery icon comes on the screen but that's it. If my nexus fried? Is there anything else I can do?
Sent from my SPH-L710 using xda app-developers app
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Screen blinking rapidly on and off? I'd call Google. I'm sure they would send out a replacement.
Sent from my Nexus 10 using Tapatalk 2

Yeah I called them. I they are sending a replacement. I have to pretty much pay for a new one untill they get the old one back.
This really sucks. What could this be?
Sent from my SPH-L710 using xda app-developers app

I've had my nexus freeze while using chrome a few times. All I do is hold the power button until it reboots. Has worked for every time.
The flickering screen does not seem normal. Glad google is giving you a replacement.

cowabunga said:
I've had my nexus freeze while using chrome a few times. All I do is hold the power button until it reboots. Has worked for every time.
The flickering screen does not seem normal. Glad google is giving you a replacement.
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Yeah, holding the power button till it turns on works for me all the time.

mattdott said:
Yeah I called them. I they are sending a replacement. I have to pretty much pay for a new one untill they get the old one back.
This really sucks. What could this be?
Sent from my SPH-L710 using xda app-developers app
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You have to pay for another first? Just got mine, & wondering about this?
Sent from my Nexus 7 using Tapatalk 2

I've had the exact same problem as OP. I was browsing in Chrome when the backlight started flickering. Wearing headphones but with no sound, I was able to hear faint static that correlated with the darkness of the screen (when the screen was dim mid-flicker, noise was produced). I had it set to a specific brightness setting, so I switched to automatic using the drop-down settings menu. The problem persisted. I did not exit Chrome. I tapped the power button which gave a normal enough looking fade out. After about 5 seconds I tapped the power button again to power the device on. The Chrome screen I had been looking at when I powered the screen off flashed briefly on my screen accompanied by a bit of static and a slight pop, and the device went black. I have not gotten a response from the device since except for, like OP, when the device is plugged into the wall. Then I only get a battery icon with a lightning bolt for 1 second every time I push the power button.
After calling the warranty information number, Google is sending me a replacement device. They do not make you pay $400 (in my case, as I had the 16Gb) but authorize a payment of that amount so that if you do not return the device within 21 days they are not left high and dry. Seems reasonable to me.
Anyway, just adding my experience with this issue to the forum. OP is not the only one to get this symptom!

I just got this same issue. Was reading my news feeds on Google Reader, it seemingly froze up for a few seconds, then the screen started flickering when touched, and finally went black. Device is non-responsive except when plugged in, where it'll display the battery icon for a few seconds.
I do not know if this is related, but I was also having the charging glitch where it would power down with "0% battery" when plugged in or unplugged seemingly at random, and the long wake-up issue.
Now I am trying to get the device awake enough to be recognized by my pc so i can adb backup my data, but so far I am getting nowhere T.T

Nexus 4 Wireless Charging Orb toggle charging problem

Anyone else experience this? Look at the battery meter widget in the upper right corner. It will go from green (not charging) to blue (charging).
When this happens if I unplug the orb and plug that same cable into the phone it charges normally. This is my second orb that has done this.

Nobody?

Sorry, not a single issue with my charging orb.
Sent from my Nexus 4 using xda premium

No issues here either. When looking at your batt icon in the status bar, does that change as well? Or does it continually say charging?

kpjimmy said:
No issues here either. When looking at your batt icon in the status bar, does that change as well? Or does it continually say charging?
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The stock battery icon changes too. It's just easier to spot the widget.

Your phone looks a bit low in the vid. Does the problem happen if you raise the phone up a bit on the orb? And is your N4 have a case or screen protector on the back? Unsure if there is a slippage problem or not.

I do not have the slipping problem and it happens even if I reposition the phone.

halo0 said:
I do not have the slipping problem and it happens even if I reposition the phone.
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I gots nothin, sorry man. Not sure why.

no problem with my orb, and it charges through wood:
http://forum.xda-developers.com/showthread.php?t=2196541

Nice! I actually envisioned doing that exact thing!

Right now my phone is sitting there at 87%, says it's charging, yet the battery is going down. It is also very hot to the touch. This is my second orb though. I wonder if the problem is with the phone.

Mine sometimes does this, I will hear it toggling off and on and such. Seems to not work with the bumper on it. Makes it not fully contact.

Mine also does this where it will connect and disconnect in a loop constantly repeating. I think it had to do with how i was placing the phone as it doesnt happen anymore.

Rafoolik said:
Mine also does this where it will connect and disconnect in a loop constantly repeating. I think it had to do with how i was placing the phone as it doesnt happen anymore.
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It's probably still happening and you don't realize it. On mine the positioning of the phone does not change anything.

halo0 said:
It's probably still happening and you don't realize it. On mine the positioning of the phone does not change anything.
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Maybe the problem is your phone, not the orb. My orb works like magic, the phone does not heat up and it charges just as fast as when plugged with the cable. Also, I use a quite thick TPU case, without any issue.

Mine has done that before (toggle on and off), but it seems to be okay lately. Only issue is that it gets pretty warm and seems to charge ridiculously slow.
Sent from my Nexus 4 using Tapatalk 2

halo0 said:
Anyone else experience this? Look at the battery meter widget in the upper right corner. It will go from green (not charging) to blue (charging).
When this happens if I unplug the orb and plug that same cable into the phone it charges normally. This is my second orb that has done this.
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Click to collapse
I am having this identical problem. I got both the Nexus 4 and the Orb replaced, and my new ones are doing the same exact thing. Usually turning off the phone and turning it back on fixes it for some reason, temporarily though.

Mine does the same thing. Almost every morning I wake up and it's at 90% or below. No slippage at all. A few times it has been almost dead. Sometimes it charges completely but rarely. Restarts don't really do anything either.
Sent from my Nexus 4 using Tapatalk 2

Apparently not a small issue. Happened to me as well, multiple times, on 2 separate orbs. Waiting for the refund on the first before I send back the second. Wondering at what point they say enough is enough and give me my money back. Battery Monitor Widget screenshots attached. From 5% to 95%, it was in the same place on the charger. No slippage. It is in a case, but it should still be consistent, I would think. The day before, the second screenshot, was abysmal. 30% in 8 hours. It boggles the mind.

halo0 said:
Anyone else experience this? Look at the battery meter widget in the upper right corner. It will go from green (not charging) to blue (charging).
When this happens if I unplug the orb and plug that same cable into the phone it charges normally. This is my second orb that has done this.
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Click to collapse
I'm having the exact same problem. I'm thinking of sending it bac, if possible.

N7 Hard Bricked Overnight

I set my Nexus to charge last night on the stock charger and cable, woke up and brought it to school. I pull it out and it won't respond to anything. Holding power for 15+ seconds, all the combinations I can think of, nothing.
I brought it home after class and set it to charge. I got the weirdest static pattern I've ever seen on the screen. It showed signs of rebooting when I held power but under no conditions would it even remotely boot to anything I can work with. I plugged it into the computer, no devices recognized. Not recognized on fastboot after any button combinations I can think of. I tried absolutely everything. It will not boot to anything but the static screen.
I can't even begin to imagine what caused it. I was running rooted stock. No mods, nothing. No water around where I keep it, on a grounded surge protector. Unbelievable. Making the call to Google right now. Wish me luck.:crying::crying::crying::crying::crying:

Is there any illumination on the screen when you connect to charger?

cooljais said:
Is there any illumination on the screen when you connect to charger?
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There was slight illumination with static around the edges. I left it to charge for about an hour, got it to bootloader, but the screen said Google? Weird. Anyways I was able to flash stock with a toolkit. It seems to be working fine now, my guess is that it died but I have no idea how, since it charged for 12 hours before that day I took it out.
Sent from my Nexus 4 using XDA Premium 4 mobile app

[Q] Nexus 7 dead?

I was on my computer when i remembered i has something written in my tablet's notes that was important. I took it out of my bag and noticed it wouldn't turn on, it was out of battery (hadn't touched it for about a week). I just plugged it in the proper asus charger and put it down and went straight back on my computer.
I decide to check on it after 2 hours thinking it would be near or fully charged. I pick it up and noticed it was on a blank back lit screen. I unplugged it and then the screen turned straight off. Wondering if it didn't charge at all i re-plugged it in. There was no google logo (rooted), instead it turn on with a lit black screen and off and repeating a few times and then small thin artifact pixels run across the screen (red, blue and yellowy colours) and then stay at a black lit screen like when i first picked it up. I had just noticed a small buzzing sound while this was happening and still does so when stuck at the screen. I'm pretty sure it was buzzing when i had found it.
I redid what i had done (unplug, replug) and watch to see if it did the same thing. It did. I tried to power it off while it was at the black screen and it did, but then it would turn back on and etc. Same if i tried to enter boot loader or any key combinations.
I've tried disconnecting the battery and reconnecting and same effect (tried it without battery attached also)
I have a feeling it is dead now and i have no other ideas (checked many forums but got nothing).
Any help would be appreciated.

yvgamer94 said:
I have a feeling it is dead now and i have no other ideas (checked many forums but got nothing).
Any help would be appreciated.
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It's surely hardware failure, have take some humidity or something like that?
Try press power for 60 seconds, if you wont see any Google logo there's some hardware failure you need to RMA ( http://en.wikipedia.org/wiki/Return_merchandise_authorization )

found the fix
I found away to fix my nexus 7. You could be right how it might have a minor hardware fault, live in australia in the high hot tropics (high humidity). I decide just to plug it into my computer usb charger instead of the proper charger since it had a lower max amp output. Against my ear, a much fainter buzzing is still heard but this time, there was nothing. No power, no back lit black screen, just a very faint buzzing. Decided to let it sit just to see what happens. After an hour or so, i decided to press the power button and noticed there was a battery charging signal. To my delight, I'm sure it was in working order now so i powered it on and oh how relieved i was.
I determined that my device might have had a small hardware fault that made it draw to much power from the 2 amp original charger and thus why the tablet could not boot up properly (from battery depletion). Either that or my charger could be bugged to. But the thing is, since it charged to slow from the usb, i plugged in the proper charger and it worked fine. Just have to try not deplete my battery i guess.
Thanks.