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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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.
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?
I have an LG G2 ls980, cm-12-20150501-NIGHTLY-ls980, render kernel
I installed cm12 a long time ago and I realized that the battery was being drained really fast with cm's kernel. Then I installed render kernel. Everything was handy dandy. Less battery drain, all was good in the world. I put my phone down for a few seconds, look back, and see that my phone is completely off. I try powering it on, and nothing happens. It isn't bricked though, there isn't a dark(bull still powered) screen, there isn't an LED, there isn't a vibration when I plug in the charger for my phone.
I tried:
Waiting a while and then charging my phone for an hour(my phone got really hot after this)
Using multiple cables(none of them were data-enabled cables if that is important)
Attempted to put it into download mode(it won't even turn on, but I saw this suggestion everywhere)
Is my battery done for? Will it begin to expand if I charge it? Will this suggestion work(I'm holding off from this since the G2 battery is very tedious to put back in):
"Ok after hours of figuring out what to do I did this as a last resort and it worked. I removed the screws from the phone and pulled the battery clip from the board ; then I pressed the power button , held it down and with the other hand clipped the battery back in, once the battery vibrated I put the phone on the charger and it turned on showed the lg logo and then showed that the battery was at 0% but was charging. My phone was not rooted it was just sitting on my desk for a week till I got back from vacation. I hope this Helps"
Replaced the LCD full screen assembly on my LG G2, all went smooth following a YT video couldn't really have gone wrong,
Switched phone on and battery displayed 0% for several minutes, eventually getting to 2% when I turned it on, all was still OK, however it dropped to 0% within a few minutes even while still plugged in,
Then it was completely dead, no charge light and couldn't turn on,
Removed all of the components again from inside of phone and rechecked all of the connections, again all OK, this time it cam on again!! 0% charging, so I left it charging waiting as long as poss, 45% it was at when I checked but left it while I was sleeping,
Woke up this morning to phone completely dead, cant power on and no charge light showing
Am I wasting my time buying a new battery? could this be another component? LCD?
Appreciate any help,
Thanks
Lee
have now disassembled and re-assembled a further twice and now it does not power on at all
no red flashing light and nothing on display
I've got a similar problem. Did you find out anything? Bought a replacement screen from ebay, and was really confident I could do this, since I earlier replaced the usb charging port with no issues. Of course the battery was discharged completely before this, but I charged the phone and it worked a week ago (which resulted in an annoying alarm that I was unable to shut off because of the broken screen). So after replacing the screen, I plugged it in and turned it on before putting on the back cover. At first it vibrated and I could see the backlight turning on. Then I could see the red led, and thought it was charging, but then the led started to cycle between different colors. I was not able to get a picture on the screen. I then plugged it out and put on the back cover, in case that was needed (didn't seem so from the yt video I used). After that, nothing. Not even a LED. And the phone didn't get any hot like it does when charging/working. It did somewhat get a bit hot the first time.
My first suspect was the battery. It did take some wiggling and force/heat to remove it‚ and it did kind of bend at the edges, but not very much. Any ideas?
So, I went for dinner tonight downstairs and when I came back I found my phone(A2017G) turned off with the notification light stuck on red.
Phone's old, bought it in July 2018(bought it resealed), though I had it changed via warranty after about two months due to the top speaker having the crackling/distortion issue. So I basically ended up with a brand new sealed phone for ~225$ at that time.
Back on topic though, plugging it in, it attempts to start up(vibrates and turns on), but displays the discharged battery icon (as if it ran out to 0 and shut itself off). Pressing the power button gives me the ZTE logo, the Unlocked boot-loader warning screen (which I usually bypass by pressing the power button again), then it blinks red three times and shuts itself off again. It's not booting in recovery either(running the nFound TWRP + crDroid ROM). However it won't charge. Tried multiple cables/charger combos, all act the same. it vibrates, displays the icon, then shuts off.
The device being bricked is pretty much out of the question right, unless it went DFU due to the battery? I've had it unlocked for the past 3 years at least...never had much issues with flashing (apart from the initial unlock which I wanted to be extra careful with but the drivers + EDL tool made it dead easy). And I haven't flashed or did anything of sorts recently.
Now, I'm 99% sure that the battery has finally given out, since the screen and presumably everything else work fine. The charging port has had no issues, always charged at QC amperage, no disconnects or anything, no "loosening" as I've had on multiple other phones. To be fair though , phone had started acting out a bit, slowing down and randomly closing apps...in the past few weeks and knowing the battery had already lost ~1000 mAh, I expected it to give out at some point. It's probably the safety mechanism built into it right?
The phone is old, as I said and according to Accu Battery, it's been at ~70% health for a while now.
Fortunately, a service shop in my country seems to have replacement batteries in an outside warehouse in Germany It should take around a week to deliver one to me, I'll change it myself. It seems to be original also. It's 25$, but I kinda wanted an opinion if I should buy it and replace it. I mean, for 25$...I've got nothing to lose, but hey, won't hurt to gather more info first.
I kinda don't want to replace the phone...since it still works fine and I still haven't found a replacement in the audio department. I've had people around me change their phones(to varying models, from low to high end) and tried each and every one of them(with Neutron/Hi-Res and enhancers off) and none sound as good as the Axon on the 3.5mm jack. The Axon simply works for me. Camera with GCam still slaps proper light pictures and documents, screen + sound is still fantastic for movies/anime at night when I can't be bothered to sit in a chair, calls are still crispier and louder than most phones today.