G2 Screen goes black at around 50% battery level. - G2 Q&A, Help & Troubleshooting

History:
Phone was warrantied after it locked up during KK update. LG Canada replaced the board.
Current:
Had it for a day, loaded everything back on (apps, photos, contacts etc..) and in the middle of uploading my backed-up videos the screen goes black. I can hear the tap/swipe noises when I touch the screen, but nothing brings back the screen. I try turning off/restart, holding the power button for 20+ secs, and confirming that it's not just in lockscreen. When turned back on, I can hear the LG splashscreen but the screen is still black.
Later that evening, I planned to set the phone to charge for the night and see if it was a battery issue. With the phone completely shut down, I plugged in the micro-USB quick charge and to my amazement the charging battery graphic appeared. I powered the phone up and everything was fine.
It has happened a few times, and all around when the battery reaches the half-charge level.
Anyone else experience this? Any way I can troubleshoot?
Should I just warranty the phone again - or get it replaced?
Thanks.

I'm having the same problem right now
Did you figured out what was the problem??
Do you have any solution?

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[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.
Click to expand...
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.

[Q] Nexus 4 battery woes

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 :/

Help Needed! Completely stock phone won't power on.

Today, my wife's completely stock, unrooted, OD2, Sprint Galaxy S4 phone stopped working. It was working earlier in the day (10 minutes prior), but when she went to check the time, the screen was black and it wouldn't respond. Tried holding power button, but nothing. Battery level was at 58%. I know this because I switched her battery with mine (85%). I discovered that after a battery pull, it will show the Samsung splash screen for 2 seconds and then nothing. After pulling the battery, I tried putting it into Download mode and the Download mode screen shows for 2 seconds and then goes black. Same thing with Recovery. I have tried to let it charge, but it doesn't show the charging screen or anything. Does anyone have any ideas on: 1) What might be causing this? 2) How to fix? 3) If permanently bricked, how to get first day of school photos that are stored on phone and not on card?

Screen stopped working, burning out?

SO Sunday morning I wake up and my phone has been on charge all night, its 100%, I unplug the phone and about 10 minutes later its very hot and at around 60% battery. So to stop this I go to turn it off and start seeing these red "bubbles" under the screen like water but its the LEDs turning red. I have never dropped the phone or put it under water. Its a hot day as it is and about 5 hours later I turn the phone back on and its fine for around 15 minutes watching youtube videos, it then starts flashing black, like the whole screen shuts off for half a second and comes back, still sound playing, about 5 minutes later the phone starts glitching out and the pixels on the right hand side start turning red (no link) like so. Then the phone starts jumping between that and this ( no link ) which happened for around a minute and since then the phone screen is just black and doesnt display anything but the phone is still active and had feedback on the screen such as touch vibrations. Really want to know whats happened and why if anyone can help
Probably a hardware defect that will be covered under warranty. But possibly a software problem that's causing the cpu and gpu to run really hot. You can try booting into safe mode to see if that makes a difference:
Shut the phone off and let it cool down.
Boot into safe mode: https://www.google.com/search?q=gal...rome..69i57.3932j0j7&sourceid=chrome&ie=UTF-8
Use the phone for a while, and see if the problem reoccurs. (Your 3rd party apps will be disabled, so you won't be able to use them, but you can do other things.)
If this seems to solve the problem, delete any recently installed apps, or factory reset the phone, and see if the problem stays resolved. If so, add your apps back in a few at a time, so if the problem reoccurs you'll have an idea what caused it.
If none of this solves the issue, it's a hardware problem.
My wife had EXACT same problem. Backup everything while you can as my wife's phone died few hours later. (no display at ALL - digitizer was working fine though - so could shut down, etc). Symptom also was that when you reboot, it will display the boot up screen just fine, but as soon as all white screen was able to display, display will just die, etc. Pressing power button repeatedly would eventually turn on the screen but color would be off and simmering, etc.

H910 Black screen with backlight on

Today my V20 H910 died on me in a rather strange way.
I've been running it on rooted Oreo (older version, not sure which specific, I know I had a made up LG logo to cover that strange "security breach" warning that usually appears after rooting) for the last 8 months or so and it worked flawlessly.
Today I started playing some game and noticed that phone had 6% battery left I plugged it in. After 15 mins or so, my game froze and screen started fading in whitish color. At this point it also became nearly unresponsive to on screen and power buttons. I ended up pulling the battery and once reinserted the phone vibrated as usual on start, however there were only black backlit screen instead of usual LG logo. Further down the road I heard AT&T ringtone, meaning the phone has booted, but the screen remained black. Eventually the phone rebooted and repeated all this a couple of times, after what it stopped going further of couple of backlight blinks. It also would get quite hot while charging.
I tried using an older charger (from a Samsung phone, that does not provide the fast charging), and it appears not to get hot while charging and after some time I could get a vibration after pressing the power button, but still black screen and it wouldn't load any further. Also I measured battery voltage before putting it on the older charger and it was around 2.7 volts. After about hour on that charger it came up to 3.4 volts. After attempted power on with charger plugged in it got hot again and reduced the voltage to 2.9.
If somebody had a similar issue, please share how did you tackle it. Thank you.
Well, answering my own question just in case it would help someone else. A gentlemen at my local repair shop told me that it was a screen issue and quoted me $140 for a repair...

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