blinking blue and green: hardware issues? - G2 Q&A, Help & Troubleshooting

When I turn ON my LG G2 (D802) unpredictable some times
- works perfectly
- sticks on LG Logo for hours
- sticks on LG logo for hours with blinking green and light blue led (some time with hot battery)
what do you suggest? Could be an hardware problem?
Everything starts after replacing battery, then I upgraded to lollipop (though official lg windows software) and root phone (through LG root script). After 3 or 4 weeks, it suddenly begin to have that issues.
The problem is that when it works I can do everything (I also re-install stock rom), but some hours works, some hours didn't. I can’t understand when/where the problem happens

Related

[Q] Charging while Bootloop and red light blinking

Hi there!
I got the following Problem. I have my LG stuck in Bootloop (no download mode) and an empty Battery (think so at least). With my cable plugged in I cant get to recovery mode (CWM) and with cable on it does not turn on anymore.
Sometimes I have the following happening additionally: The notification LED is blinking red. Mostly 7 times in a row and then a little break.
I have the feeling, that even if I would have the charger plugged for hours, the battery does nothing but getting worm. The whole upper half of the LG is getting worm.
Thanks in Advance!

[HELP] LG G2 D802 won't boot up

Hello everybody,
I'm the owner of a G2 for about two months, everything was fine till yesterday, the battery was low so I charge it as usual, the phone was turned on, but one hour later when I checked it, when I checked it, it was off with just a red blinking light (notification).
I searched about the problem so I tried to hold the power button for a long time, tried to hard reset it by holding the button power and volume down for a whole minute but nothing happen for both. :crying:
I hope someone could help to solve this annoying problem, I'm desperate...
NB: - the red blinking does appear only when I charge the phone or connect it to pc.
- I also charge it the whole night but no result.
(sorry for my bad english)

LG G2 doesn't boot and flashes 8 times red after repair

Dear fellow XDA members,
Yesterday, I replaced by LG G2 screen and after the repair the phone wouldn't boot anymore. It however shows signs of life if I plug in the charger, this is what happens then:
Notification light blinks 8 times red
Pause
8 times a red blink
Pause
and this continues for ages.
What I did sofar:
-Tried to soft reset & hard reset via button combo (no result)
-plug out the battery connector & plug it in again
-check all connections and possible damage (no potential problems found)
-Check voltage of battery (it is around 3V)
-Put phone in charger for a whole night
Do you guys have any ideas what is causing the problem? what does the 8 blinks error code mean? Hopefully you can help me out!
that sounds like the new screen is damaged.
try the old one and see if it boots
i dont think that it has anything to do with the battery
no idea what the led error code means
Not working.. Also replaced battery, but still same blinking led

Strange problem in my Lg G2

Hello Guys
My lg g2 has a very strange problem !!
Every thing is operating normally in the phone till battery reachs 60%
Once it be 60% the screen stuck in black most of times
Knock feature doesn't wake up the device, also the power button
After pressing 10s times on power button and knocking on the screen sometimes open sometimes not.
It needs to be plugged in wall charger to operate semi normal (it works good in the charger but it do stuck for one or two times only)
I noticed that the screen is Lighting up but it shows black only no data at all
And some times gives black only.
I tried to restart my phone. It restarts normaly but the screen still black even lg logo didn't appear but it opens with black again.
The screen is working i can hear my touch sound ( swipe look, answering phone call, volume up and etc.)
All this happened only once the battery reachs 60%
My devise not rooted, updated to lollipop, i did hard and soft reset, connected the devise to lg pc suite
Nothing helped. Also my battery is draining super fast even in charger !!!
Do you have any ideas? Is it battery problem or cables or what?
Any suggestions??

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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