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
Hi everyone. I'm owning a Samsung Galaxy S4 for 3 months now. The problem I want to inquire about is that for the last 2 months I have been facing sudden phone restarts/reboots until yesterday it doesn't boot up at all.
For the last two months i have been facing sudden restarts when I turn the phone off and then try to turn it on. It had been booting up, but after a few minutes it had become frozen and then it had been restarting itself, sometimes for multiple times, until it booted up normally. Then I could use my phone without any sudden restarts, but ifl I turn it off or discharge - the same story.
Yesterday my phone battery discharged and when i charged it and tried to turn it on it just doesn't boot. It freezes on samsung galaxy s4 (I-9505) logo, then screen becomes black and it restarts it self.
I'm pretty sure that this is hardware problem as I tried to reset phone to factory default with volume up+home+turn on button and tried to enter safe mode, but i failed.
By the way, I don't know whether this is coincidence or no, but for those two months, when i have been facing restarting problem, my phone discharged very fast. I mean in stand-by mode (with energy saving mode, wifi and gps off), it had been loosing ~45% of battery per night (during i sleep).
Does anyone have any ideas what could be wrong with the phone? :silly:
It's sounds like battery problem to me, so I would suggest you to take it to service centre.
Sent from my GT-I9300 using XDA Premium 4 mobile app
I had a similar thing happen to me. Sent it in for repair and whatever they did sorted it. Could be a bad battery. I suggest getting it fixed via warranty.
Sent from my GT-I9505 using Tapatalk 2
Hi,
was watching Youtube on my phone (GT-I9505 with GPE ROM by yesterday. Suddenly the screen froze up, while the audio was still playing. Nothing helped so I pulled out the battery and restarted. After that everything was ok. However this morning my phone was dead. So I force restarted again, however it won't start. The Galaxy Logo comes up for a split second and then the screen goes black again. I can't even boot into Recovery Mode. I can only get to Download Mode. Has anyone an idea what to do???
Charge the battery probably a good idea.
When did you install the rom?
Sent from my ZTE Kis 3 using XDA Free mobile app
Oh man, it was indeed the battery. Even though I plugged it in last night it apparently didn't charge. However, since the phone didn't die right away when in Download Mode I didn't make the connection of it being the battery. Feeling like a total noob, lol. Thanks everybody.
I was running a standard OS, no root/custom/anything (mostly because I couldn't find a compatible hack). Anyway, I had my phone running happily for ~2+ years, no trouble at all, but few days ago I left it charging for 2-3 days (it powered down due to lower power before that). I've done it before several times, but when I tried turning it on, it was stuck on Samsung logo (white on black). I restarted, it was stuck a bit further on the colored startup animation. Third time, stuck on the logo again. I turned it off, but it was a bit warm after 10 or so minutes. I tried charging it - it showed the usual green battery charging from 80% or so. I took the battery out, pressed the power button for a minute for some hard reset, but the battery back in, and from that point on it seems I have a brick. No reaction to power button, no reaction to charging. Power+Home+VolUp produce no reaction, either.
Is there anything I can try, or should I just give up?
Factory reset ??
Flash stock rom via Odin ??
Sent from my SM-N930F using XDA-Developers Legacy app
piokon said:
I was running a standard OS, no root/custom/anything (mostly because I couldn't find a compatible hack). Anyway, I had my phone running happily for ~2+ years, no trouble at all, but few days ago I left it charging for 2-3 days (it powered down due to lower power before that). I've done it before several times, but when I tried turning it on, it was stuck on Samsung logo (white on black). I restarted, it was stuck a bit further on the colored startup animation. Third time, stuck on the logo again. I turned it off, but it was a bit warm after 10 or so minutes. I tried charging it - it showed the usual green battery charging from 80% or so. I took the battery out, pressed the power button for a minute for some hard reset, but the battery back in, and from that point on it seems I have a brick. No reaction to power button, no reaction to charging. Power+Home+VolUp produce no reaction, either.
Is there anything I can try, or should I just give up?
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The only answer I can think of is that your battery is dead. I would try to use another battery before getting to the conclusion that your phone is completely bricked. Or just let the battery out of your phone for a couple of days and try again later.
JJEgan said:
Factory reset ??
Flash stock rom via Odin ??
Sent from my SM-N930F using XDA-Developers Legacy app
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Can't do either since the phone is not turning on.
ShaDisNX255 said:
The only answer I can think of is that your battery is dead. I would try to use another battery before getting to the conclusion that your phone is completely bricked. Or just let the battery out of your phone for a couple of days and try again later.
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Tried a new battery, the phone still won't turn on. No lights, no charging screen, no activity.
piokon said:
Tried a new battery, the phone still won't turn on. No lights, no charging screen, no activity.
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Must have fried something. The only thing I would check now is to connect it to a PC with a USB cable and see if the PC detects something, ANYTHING. If it makes sounds that something has been connected to it. I remember when I hard bricked my phone, it did not turn on at all but my PC still sort of detected it. I guess that is the only thing left to try to give you a definite answer