Database Users

Wont Charge.

My nexus 7 tablet is dead , so I plug it into the chragers and no little battery image shows up, but after about 5 minutes ( I didnt touch the power button ) itll say Google, then it powers up, goes to the home screen, says 0 % Shutting down, then turns of and repeats the process? what can I do? And now the screen is flickering.

Joelkat said:
My nexus 7 tablet is dead , so I plug it into the chragers and no little battery image shows up, but after about 5 minutes ( I didnt touch the power button ) itll say Google, then it powers up, goes to the home screen, says 0 % Shutting down, then turns of and repeats the process? what can I do? And now the screen is flickering.
Click to expand...
Click to collapse
EDIT: I got it working after using the phone to charge for a few minutes
not sure if this fixes or helps anyone else but i got bootloader working
Same thing is happening to me. Two days now. I have followed all the instructions i found online saying
Drain off all the juice from your Nexus 7.
Connect your dead Nexus 7 to the charger and press the Volume Down and Power Button simultaneously. By doing this, you’ll head over to the Bootloader menu of the Nexus 7.
Scroll down to the “Power Off Device” option with the help of Volume Down Button.
Select it by tapping the Power button and disconnect the device.
Quickly connect the device to the USB charger again.
You’ll now see the Battery picture on your screen making your device working again.
Click to expand...
Click to collapse
However when i get to the bootloader i cannot scroll through the options or select anything. It just says "Start" and none of the hardware buttons respond.
When i do let it boot as above poster said it saw connect to charger and shutting down
weirdest thing is that it says "Connect to charger" and if i jiggle the usb it changes to "Charging 0%" but shuts off
I've tried multiple cords and chargers so the issue seems to be with the nexus
i'm at a loss and i've had the device since launch so returning it isnt an option..
any suggestions or help is greatly appreciated

Stupid stupid mistake!

I think I have fried my Nexus 7.... didn't even think about what I did how stupid am I....
I decided to wire up a Hella connector to a USB cable the idea being to plug it into my phone for charging on the road... I then had a not so smart idea to use my OTG cable to connect the USB A connector to my Nexus 7 to see if it worked...
Nexus 7 booted past the bootloader and then nothing.... I realised then how stupid I had just been...and still nothing...
Presumably I've run a shed load of power down one of the data line..... what a fool.....
ARGH!!!!!!! anything I can possibly do to salvage it.... please!! :crying::crying::crying:

you could try something ASUS support told me, press all buttons (volume + & -, power) for 30 seconds, and if it won't boot after that, you should get a RMA

chiwou said:
you could try something ASUS support told me, press all buttons (volume + & -, power) for 30 seconds, and if it won't boot after that, you should get a RMA
Click to expand...
Click to collapse
Going the RMA route would be costly. If it is dead, he'd be better off just bring a new N7.
Sent from my Nexus 7 using Tapatalk HD

Thanks for the suggestion but no it hasn't worked...
I've had the N7 plugged into the charger for the last 30 minutes or so and when I went back to it the screen backlight was on slightly (you can see if you look at the screen from the side)... but the whole unit was really really hot... I've obviously disconnected it but now can't get the thing to turn off, if I hold down the power button the screen flicks off but then back on.
:crying::crying::crying::crying:

najaboy said:
Going the RMA route would be costly. If it is dead, he'd be better off just bring a new N7.
Click to expand...
Click to collapse
I would think that "broken display” units on eBay/CL probably have working mobos and batteries, as the owners are trying to dump them because of the broken screen. But, buying used is a crap shoot.
Nice that Google is selling N7s at cost (or even a loss) - but it does mean that any oem component replacements will be a significant fraction of the original price.

I was reading in Play Books when my N7 shut down due to low battery. I plugged it in and it wouldn't charge or boot and I noticed a faint light bleed and faint dots streaming from right to left on the display. I tried things like holding the power button for 30 seconds to reset, holding vol down and power to try to get to recovery, but it wouldn't take. Finally, with it plugged in, I held down the power button for just about 10 seconds and backlight and dots stopped. A few seconds later without pressing anything, it booted up. It would start to charge, but if the screen timed out, I was back to the earlier state and it wouldn't come on. So I got it started again and immediately went to developer options and checked Stay Awake while plugged in. Eventually the charge built up and I'm back to normal, at least my N7 is normal. I only mention this because the OP talked about the faint backlight and it may be worth trying.

busterdan said:
Thanks for the suggestion but no it hasn't worked...
I've had the N7 plugged into the charger for the last 30 minutes or so and when I went back to it the screen backlight was on slightly (you can see if you look at the screen from the side)... but the whole unit was really really hot... I've obviously disconnected it but now can't get the thing to turn off, if I hold down the power button the screen flicks off but then back on.
:crying::crying::crying::crying:
Click to expand...
Click to collapse
A standard hella charger outputs 5V at 2A which is the same as your N7 original wall charger.
I doubt your problem came from the charger, it might be softbrick at an unfortunately moment.
I came across a similar problem when i was editing a custom kernel.
If you tried every method to shut down the device and failed do the following:
1. Open the case (it's quite easy to open with a plastic card)
http://www.ifixit.com/Guide/Installing+Nexus+7+Battery/9895/1
2. Unplug the battery and hold the power button 30 seconds (with the battery detached)
3. Let it soak for 10 minutes
4. Reconnect the battery and close the lid.
5. Put your nexus 7 in the wall charger, and you should see the battery bar on the screen.
After that, let it charge a few minutes and boot the device.

TPT won't power on?

Hi all,
My TPT this morning for some weird reason stopped turning on. I plugged it into my dock. When it's in the off state it shows the charging logo. But when I go and turn it on, the screen stays black with no Lenovo bootup logo. The red dot in the back of the tablet however, is on when I switch it on. I initially thought that the power drained but I've been charging it for an hour and it still doesn't boot up. Any suggestions? Thanks

Press the tiny button next to the SD-card and then try and start the TPT. You might be in bootloader.
Otherwise, maybe your display cable became disconnected inside. Easy to do or fix if you've opened it up.

pwstein said:
Press the tiny button next to the SD-card and then try and start the TPT. You might be in bootloader.
Otherwise, maybe your display cable became disconnected inside. Easy to do or fix if you've opened it up.
Click to expand...
Click to collapse
Tried resetting, no dice.
Also I don't think its a display problem. Since when its off and I plug it into my dock the charging logo does show up for 5 seconds. Also, when I turn it on, there's no vibrate that the TPT usually does. I noticed that the red light only stays on for maybe 10 seconds then goes dim again

alexander.euclid said:
Tried resetting, no dice.
Also I don't think its a display problem. Since when its off and I plug it into my dock the charging logo does show up for 5 seconds. Also, when I turn it on, there's no vibrate that the TPT usually does. I noticed that the red light only stays on for maybe 10 seconds then goes dim again
Click to expand...
Click to collapse
Okay so this is definitely weird. I just plugged it into my PC and via USB and it actually started up! But when I unplug it from my PC it acts the same as before... battery indicates a full charge in android though...

N7 won't turn on. I get some faint "snow" when trying to charge

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.
Click to expand...
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.
Click to expand...
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

Nexus 4 Red Light of Death: Already Reconnected Battery

Hey guys, so my friend gave me her Nexus 4 and asked me to try and figure out what the problem was...
As the title says, the device refuses to turn on no matter what, I've tried using different chargers, different cables, even opened up the back cover, disconnected the battery from the device and left it like that for about half an hour, then plugged it back in, nothing. If i try to press any of the buttons while the device is plugged in, the Red light comes on and stays on until after i let go of the buttons...any thoughts? Its been awhile since she got this phone, so i don't believe she'll be able to send it back to Google to get a replacement.
TIA!

I read somewhere that you need to externally charge the battery to fix this.

nileshgr said:
I read somewhere that you need to externally charge the battery to fix this.
Click to expand...
Click to collapse
How would you go about doing that? Thanks!

The battery could simply be toast. A new one off eBay will run you about $20.

I had the same problem. Try this steps pls:
Press Volume down+power buttons at the same time for 15 seconds.
After 15 seconds, plug the charger as the buttons pressed
After doing this u will see the led than the phone is going to start charging
That's it.

ariciselman said:
I had the same problem. Try this steps pls:
Press Volume down+power buttons at the same time for 15 seconds.
After 15 seconds, plug the charger as the buttons pressed
After doing this u will see the led than the phone is going to start charging
That's it.
Click to expand...
Click to collapse
Thanks for the input! I tried this, but when i plugged it in, the LED blinked Red once and then still no response from the device?