[G3 Q&A, Help & Troubleshooting] Depananiebal:
Hello people of the internet and most likely LG G3 users. Yesterday my LG G3 D855 died right when I was about to watch some good hentai. I’ve been having screen flickering for ages in the YouTube app and as of late the screen also started to fade to black from the corners, random reboots were also quite common. Android became unresponsive for a couple of seconds and then the screen when completely black in a split second. Tried a lot of things after that: removed the battery countless times, changed with an old battery, charged it for hours at the time (battery wouldn’t get hot so no charging), connected to my desktop. No Android, no TWRP, no bootloader, nothing could make my G3 do anything. I was convinced it became a paperweight. After that I proceeded to disassemble the phone. Disconnected all the ribbon cables of the cameras and the display etc and put them back in firmly. That did do anything. HOWEVER I remembered when I was wasting time reading toxic XDA comments and stuff that someone mentioned baking the device to restore connections between the motherboard and the SOC, or something like that. So I did some research and even though something as stupid as putting it in the oven actually seem to work for people. Mum wouldn’t let me put it in the oven so I made my own way of resurrecting my G3. This is what I did to get it back working:

I’M NOT RESPONSIBLE IN ANY WAY IF THIS GOES WRONG AFTER TRYING THIS. IT IS 100% YOUR CHOICE TO DO THIS OR NOT.

Requirements:

DISSEMBLING

LG G3

Screwdriver small enough to remove the G3 screws

Plastic prying tool (old credit card, solid thin plastic will do also)

Good light source

REVIVING PROCESS

Hair Dryer that can get a fair bit hot

The grill of an oven

Stopwatch

A floor that can withstand heat

A place that can be ventilated in case of toxic fumes (nothing happened for me)

Safety goggles (I didn’t have and so didn’t use)

Electrical

fire extinguisher (I didn’t have and so didn’t use)

STEPS FOR MAKING AN UNDEAD PHONE:

1. Remove battery, SIM card, SD card.

2. Proceed to disassembling the phone to the state where you

only

have the motherboard. I used these guides:

https://www.ifixit.com/Teardown/LG+G3+D855+Teardown/42288

And

https://www.youtube.com/watch?v=sNymIdIXTyI

3. Place the oven grill on a surface that can withstand heat and then gently place your LG G3 motherboard on it.

4. The heating process:

1.

Turn on the hair dryer and start to focus the heat on the part of the motherboard that is facing towards you when you take it out. So not the part where you see the SOC. See image. Hold the hair dryer close to the motherboard (5 cm space or so) and do this for 10 minutes.

2.

Let it cool down for 5 minutes and turn it around.

3.

Proceed to heat the SOC for 15 minutes and let it cool down fully for a minimum of 15 minutes.

4.

But it back together, hope that luck is on you side and that it will turn on.

NOTE: First boot went all the way till android boot screen when it crashed with screen flicker. I removed the battery and waited a minute or two and tried it again and it has been working ever since yesterday night. This is probably not a long-term solution so I’d suggest just using this to get your data off you phone and moving on to another device as fast a possible.