Have had the phone for a while now but for some reason recently the phone will randomly shut off. Some times it will immediately start booting back up but more often then not it will just stay black. holding the power button does not turn it back on and some times even holding the power down and the power button doesn't work I just have to wait. I'm not sure whats going on.
The problem is this most recent time it did this and the light was solid blue. after a while a green light started to flash slowly while the blue was still illuminated but the phone would not power on no matter what I tried. I took the back glass off and got to the battery plug and unplugged it (thinking that it was just a hard freeze) now i have no lights and I can't power it on. I don't even get a battery or any lights when I plug the power in.
Has anyone seen anything like this or could give me any other troubleshooting steps I could try to follow? I've put the wireless charger and retainer and screws back in but haven't resealed the back glass in case I have to go back in.
Seems to me like the MMC (memory management controller) chip is dead.
That's a motherboard swap isn't it?
So I opened the phone as disconnected what I think was the screen and some other plug on the bottom left of the mobo maybe the touch synthosizer? I let it sit for about 15 20 mins charging. I plugged all the connectors back in and it booted properly.
Why did that work?
Now that it's up I did a factory reset put apps on one at a time and using Snapchat causes the phone to shut off.
Related
About 3 weeks ago I noticed my nexus 7 charger or charger port inside the nexus (more likely) was faulty and I was having to physically put fore on the charger to bend it downward to charge.
This was fine, however since then about 4-5 days ago I dropped my nexus 7 into a shallow sink of water. (about 10-15cm). I removed it immediately and dried it, disconnected the battery and left it in rice for 1.5 days. I then reconnected the battery and noticed it automatically tuned on. There was a small smudge on the top of the screen, and the power button on the side did not function.
I put it back in rice for another 2 days and then found the smudge had gone, but the power button still didn't work. I opened the back cover of my nexus 7 and noticed the track joining the volume up and power contacts was slightly broken, possibly from water. I was and still am likely to try to fix this by applying some conductive paint over the affected area. It is worth noting that I used it for several hours, and the device worked fine aside from the power button and charged normally
Because the power button didn't work I did not want to get my nexus to dim the screen and lock itself, so I turned off sleeping in the settings. However, this then depleted the battery and it must have turned off when I left it. I plugged it in and because I'm guessing the nexus somehow detected the power button wasn't working, turned itself on as it had done before, however it then shut down because there was no charge, and then turned on again, and then turned off... (only when plugged in)
I realised this would be happening all night, so I opened the boot menu by pressing the volume down key during the nexus 7 starting up, and left it in that screen overnight hoping it would let it charge. However in the morning I realised I couldn't exit the screen because one of the controls was the power button so I disconnected and reconnected my battery. Now this is where I am currently at, there is no activity when the nexus is not plugged in, so I do not think the battery has charged, and when I do put the charger in (and I have to hold it down to physically bend it to charge) it now has a black screen with random white fuzzy pixels and no activity.
Please help!
i thought this thread was a joke lol
dude you may as well just finish the job and run a truck over it :good:
try getting another battery , fixing the power button, if your get more problems just accept .....you killed it lmao good thing they're only £190
Chirpybow said:
About 3 weeks ago I noticed my nexus 7 charger or charger port inside the nexus (more likely) was faulty and I was having to physically put fore on the charger to bend it downward to charge.
This was fine, however since then about 4-5 days ago I dropped my nexus 7 into a shallow sink of water. (about 10-15cm). I removed it immediately and dried it, disconnected the battery and left it in rice for 1.5 days. I then reconnected the battery and noticed it automatically tuned on. There was a small smudge on the top of the screen, and the power button on the side did not function.
I put it back in rice for another 2 days and then found the smudge had gone, but the power button still didn't work. I opened the back cover of my nexus 7 and noticed the track joining the volume up and power contacts was slightly broken, possibly from water. I was and still am likely to try to fix this by applying some conductive paint over the affected area. It is worth noting that I used it for several hours, and the device worked fine aside from the power button and charged normally
Because the power button didn't work I did not want to get my nexus to dim the screen and lock itself, so I turned off sleeping in the settings. However, this then depleted the battery and it must have turned off when I left it. I plugged it in and because I'm guessing the nexus somehow detected the power button wasn't working, turned itself on as it had done before, however it then shut down because there was no charge, and then turned on again, and then turned off... (only when plugged in)
I realised this would be happening all night, so I opened the boot menu by pressing the volume down key during the nexus 7 starting up, and left it in that screen overnight hoping it would let it charge. However in the morning I realised I couldn't exit the screen because one of the controls was the power button so I disconnected and reconnected my battery. Now this is where I am currently at, there is no activity when the nexus is not plugged in, so I do not think the battery has charged, and when I do put the charger in (and I have to hold it down to physically bend it to charge) it now has a black screen with random white fuzzy pixels and no activity.
Please help!
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Click to collapse
Hey Chris, I had a similar issue. The unit was water damaged and went into a continuous loop of turning itself on and off. I eventually also put mine in a bag of rice and took it out after a week to realize the power button was probably damaged and kept looping itself in that cycle. Each time when I plug the device into a power source, it just turns itself on, gets into the OS and then turn itself off again because there wasn't enough power.
I ordered a power button strip on ebay for $10 and tried to install it into the unit. After the installation, I was able to charge the unit (ie: when i plug it into a power source, I can see the charging icon come on and after a day it was fully charge. At the same time, the device didn't keep rebooting itself).
Now that the Nexus 7 is fully charge, whenever i reinsert it into a power socket, the icon will say it is fully charge. When i press the power button however, it won't start up. This is where I am, also stuck and don't know what to do.
My 14th month old N7 (out of warranty ) has run into some issues. I left it alone for a few days and the battery ran out. Nothing completely out of the usual, happens from time to time. I picked it up, plugged it into the Asus charger, white battery logo came up, i then turned it on.. Google logo. I then set it down.
Came back to it about an hour later and it was off. I tried turning it on while still plugged in, notthing. I unplugged and tried turning it on, nothing. I try my HTC One charger, nothing. Tried plugging it into a USB port on one of my computers, nothing. I read the sticky thread and tried all of the recommended items. Re-seated my battery connector, nothing. I realized that when i tried turning it on, i'd get a faint flicker / 'snow' like affect, like the screen was trying to turn on, but something was wrong. I tried holding the power button for over a minute, nothing. Tried vol down+power for 60 seconds, nothing.
I would search, but im getting a message that it's down.
Any thoughts?
I'm running Slim Rom (4.3) + M Kernel. I hadn't flashed or done anything out of the ordinary in weeks.
Kewjoe said:
My 14th month old N7 (out of warranty ) has run into some issues. I left it alone for a few days and the battery ran out. Nothing completely out of the usual, happens from time to time. I picked it up, plugged it into the Asus charger, white battery logo came up, i then turned it on.. Google logo. I then set it down.
Came back to it about an hour later and it was off. I tried turning it on while still plugged in, notthing. I unplugged and tried turning it on, nothing. I try my HTC One charger, nothing. Tried plugging it into a USB port on one of my computers, nothing. I read the sticky thread and tried all of the recommended items. Re-seated my battery connector, nothing. I realized that when i tried turning it on, i'd get a faint flicker / 'snow' like affect, like the screen was trying to turn on, but something was wrong. I tried holding the power button for over a minute, nothing. Tried vol down+power for 60 seconds, nothing.
I would search, but im getting a message that it's down.
Any thoughts?
I'm running Slim Rom (4.3) + M Kernel. I hadn't flashed or done anything out of the ordinary in weeks.
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Click to collapse
happened on mine the other day its a low battery problem, let it charge for 30mins or so, hold power down for like 30 seconds, let go and repress power button, should boot as norm.
seems if the batt completly runs down it sorta needs a jump start from charger to get goin again
I've tried this multiple times. I was thinking along the same lines. I'll keep trying this. But so far no dice. Thanks for the reply.
Kewjoe said:
I've tried this multiple times. I was thinking along the same lines. I'll keep trying this. But so far no dice. Thanks for the reply.
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ok try holding the power button down for a while , does the screen light up? if yes wait and when it turns off again try rebooting as from fresh.
if no re-try and re-try again if no luck. im at a loss, other then trying with / without charger plugged.
edit: on that thought , charge 30 mins hold power button screen lights up no detail/image, hold power ,screen goes off, charge from charger should progress ( press power momentarily and see battery charging icon, screen goes off. wait another 30mins, boot as norm.
chismay said:
ok try holding the power button down for a while , does the screen light up? if yes wait and when it turns off again try rebooting as from fresh.
if no re-try and re-try again if no luck. im at a loss, other then trying with / without charger plugged.
edit: on that thought , charge 30 mins hold power button screen lights up no detail/image, hold power ,screen goes off, charge from charger should progress ( press power momentarily and see battery charging icon, screen goes off. wait another 30mins, boot as norm.
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When i hold the power button (i mention i hold it for 60 seconds at least, i literally timed it). i get flickering snow, nothing visible. but the screen turns on and i see some faint snow.
The rest of what you wrote i've tried numerous times in different configurations. charging for 30 mins, not charging, plugged in, not plugged, etc. so far i have not seen any icons or anything. The only sign of life is the flickering screen with faint snow.
Kewjoe said:
When i hold the power button (i mention i hold it for 60 seconds at least, i literally timed it). i get flickering snow, nothing visible. but the screen turns on and i see some faint snow.
The rest of what you wrote i've tried numerous times in different configurations. charging for 30 mins, not charging, plugged in, not plugged, etc. so far i have not seen any icons or anything. The only sign of life is the flickering screen with faint snow.
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Click to collapse
It's a long shot but still: try leaving it alone for couple of days (3 for example), completely alone, don't touch it, after few days, plug it in and leave it alone, after an hour or two try turning it on.
I've had such experience with some old iPod, it died, but came back to life a month later when I tried to play with it again.
We have a sticky for this, at the top of the Troubleshooting page.
http://forum.xda-developers.com/showthread.php?t=2090826
Hope this helps.
-bk
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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Click to collapse
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.
Hey guys
I just had my digitizer and LCD replaced. My battery appeared to be damaged when I ripped it out, and the back cover was cracked extensively from the drop.
I got the phone back from the repairer with just a new screen/lcd in it, who said he had troubles powering it on. I got it home and charged it for half an hour and it would get to the google circles spinning and it would cut out and go back to the charging screen.
I ordered a new battery and installed it this afternoon, about an hour or so ago.
When I plug the phone in to the power, the light flashes orange for less than a second and it stops. No buttons are responsive.
If I hold down the vol-down button and insert the micro usb, it goes to the bootloader menu and stays there. If I select start it shows the 'Google' screen then cuts out and the light flashes orange once. If I hold vol-up when inserting, it shows the battery charging icon for a few minutes and then cuts out, and when it does the light flashes orange once.
I've left it sitting for about half an hour now and it's still not responsive.
Anyone have any ideas whats going on before I put the original battery back in?
Put the old battery back in with the same results.
What the hell is going on :/
G'Day all.
I took my phone out of my case as it was getting a little hotter than usual while I was charging it.
I was in a hurry to leave home and so on grabbing the case and putting it on in a hurry I actually placed it on the wrong way and so the case was not aligned with the buttoens.
The case was therefore pressing against the buttons and powered off the phone. When I realised my error about 15 mins later I put the case on properly but found that the phone would not turn on. I held down the power button nothing happened. I got home and put it on a charger but the LED light would not even indicate that charging was taking place.
Been about 4 hours since but same thing. NOTHING. Phone remains unresponsive.
Any idea what is wrong with it