yashsingh1/xdaforums huggingface dataset:
[G3 General] IngJulian_RVLX:
October 2014

Greeting's!!:good:
[G3 General] ZjemCiKolege:
Hmm i never have this issue on my d855 :p only when i charge on lineageos i get blue flickering when i watch yt ;p
[G3 General] reggjoo:
Tried this a while ago( even made a tiny heatpipe, out of aluminum), it did work, but it still couldn't stop the dreaded demigod errors. Once in a while, I put it back together, and see how far I can get it to boot. Xenon boots into the os, but after 12 seconds, demigod strikes.
[G3 General] Benik3:
The best would be to use copper plate with exact diameter to fit precisely (on ebay they are for few bucks) + if you fear about shifting of the copper plate, you can use some high quality thermal glue (e.g. Arctic Ceramique 2) to glue one side. Of course use some high quality thermal paste, like Arctic Silver 5 ;)

To protect surroundings you can use capton tape ;)

Don't confuse heatpipe with thermal conduction. Heat pipe works on exchanging of heat threw gas-liquid system (it use high volatile substance).

Also aluminium has pretty bad thermal conduction (compared e.g. with copper), but it has higher thermal capacity... :)
[G3 General] skidsss:
After the lineage os installation appeared on the screen this problem (It darkening the screen after a few seconds).

with this guide I managed to solve (at least for now it seems so).

I used thermal grease Cooler Master and aluminum foil.

thank you :)
[G3 General] totalnoob34:
Good job. Still:

- Put WAY less paste.

- If you don't need pressure, stick with paste only, that way thermal resistance is lower than with foil stacked in
[G3 General] bananapeal:
i thought foil would give thermal mass. you are achieving same results simply with paste? what is paste doing if it doesn't touch anything?

i've only had one random reboot recently. idk if i try this for fun.
[G3 General] unimatrix725:
Practical and useful, this is why I skipped the G3. I myself would consider a Copper Shim instead of Aluminum. You did get better results than I expected.

I read the whole thread, ignore the suggestion, perhaps unless you don't have screen issues... Maybe some hot glue around the edges of the shim...?
[G3 General] Ghassane:
I've seen in many forums that only phones manufactured in 2014 have encountered this issue due to bad soldering (that's why the oven solution works for few days), no G3 manufactured in 2015, has blue screen issues, flickering whatsoever.
[G3 General] emmetmyers:
Thank you OP

Now for the tips. just use the foil and past. works good if you want to be all top of the line and cheep at the same time then hammer foil down till it's rock hard and use that. also works good and has a bit better thermal conductivity and mass.

I keep some copper tape and like to use it on the backs of stuff like this. I have had two phones with thermal pads on the SIC, Charge controller, power controller. i also used lots of thermal grease (filled one phones shielding tin for the charge controller with it) This let me over clock both more then anyone and they stayed cool.

Note if your phone fills hotter in your hand that is good as it means your pulling heat out of chips to the case/screen.
[G3 General] L33TaS:
Stop right there, I have a 2015 model of G3, and i got screen flickers on it rn, It flickered less after a factory reset, and only starts to flicker when getting about 55-60C right now with only thermal paste added.

And i'm not sure, i could have a software problem, because why did it flicker less after a factory reset? I didn't even have that much programs.
[G3 General] Ghassane:
Sorry to hear that, I just wrote what I've seen on other forums, it might be wrong.
[G3 General] DJ_MiX:
Had a Verizon g3 which was completly dead and sometimes showed up USB QDloader mode.

My fix was reflow CPU with flux and then added thermal adhesive tape, been working great over 1 month..

Keep fingers cross !!
[G3 General] IngJulian_RVLX:
I was on a same situation when a client bring me to repair and International G3 (D855), the NAND and SoC/RAM has bad soldering, and the Flux/Heat fix it, and I put the solution to avoid trouble in a Mid-term...

LG, making unreliable devices since the Optimus Black (or maybe even more before)...

Greetings!!! :good:
[G3 General] IngJulian_RVLX:
I was researching about it... It seems that doing Factory Reset release more RAM usage (RAM is above SoC, so it melt soldering quicker), so no Software Failure at all...

Anyway, I suggest to you to use some extra dissipation (like the aluminum, or something metal-related) if this frequents...

Greetings!! :good:
[G3 General] :
What if i have no display?

Like, it doesn't show anything???
[G3 General] IngJulian_RVLX:
If the device respond to gestures (like touching screen or having sound events) it means the SoC has been dissoldered, just make pressure on the SoC with the Aluminum Foil, if can't, you need to heat the SoC..

Follow the Guide, and comment if worked...

Greetings!!! :good:
[G3 General] :
And how i can reheat the SoC?
[G3 General] :
I can do this trick without thermal paste?
[G3 General] 西村大一:
Dude, are you serious? I even told you on the other thread, just bake the freaking motherboard in a goddamn oven. Are you ignoring advice from someone who had the same problem? And no, thermal paste is a must.
[G3 General] :
Can you make a video?
[G3 General] 西村大一:
If you can not follow written instructions then NO, not in a thousand years. If you keep being stubborn and ignore my posts, then good riddance. Keep your G3 broken because you are unable to read and understand written instructions.
[G3 General] :
Then use images!!!

Jeez!

I just want to try everything to fix it -_-
[G3 General] 西村大一:
I am so sorry, i was having a bad time when i replied before. And as you can see, i was pretty angry. Tell me what exactly you want pictures of so i know what pictures to give you.
[G3 General] :
It's ok buddy!

We all get pissed xD

Anyway...can you show me how to place the motherboard in the oven?

---------- Post added at 05:09 PM ---------- Previous post was at 05:07 PM ----------

Wait!!

Can a hair dryer work too?

Because i am scared to do accidents with the oven :/
[G3 General] 西村大一:
The hair dryer doesn't produce temperatures of up to 180 degrees celsius for the solder to melt. Let me open up Photoshop and produce an image of how you should place the motherboard on a tray.
[G3 General] :
Thanks.
[G3 General] 西村大一:
The first picture probably, the one with just the motherboard, is just the location of the aluminium foil balls. About 3-4 centimeters in diameter, just to balance and lift the motherboard off of the baking tray. And the other one is how you position the motherboard on the baking tray, making sure the side with the SoC is facing up (like in the picture). Before that, preheat the oven to roughly 183 degrees Celsius, and when it is done, put it in the center of the oven, and make sure you select the heat from top and bottom. Leave the motherboard in the oven for 10 minutes, then take it out and leave it to cool for about 15-20 minutes. Make sure to not put anything else in the oven. Just the motherboard with its shields. After you let it cool down, get some thermal paste and apply it in the gap in the midframe where a thermal pad was supposed to be put (probably left out because LG engineers were drunk?). Put a generous amount, about the size of a pea, or a centimeter in diameter. Ask if you get into trouble.
[G3 General] :
I have a classic type of oven (it doesn't show the Celsius)
[G3 General] 西村大一:
Neither does mine, just eyeball it, and if it has markings like from 150 to 200, put it in the middle but more towards 200, like 3/4 towards 200.
[G3 General] :
But are you sure it will REALLY fix my problem?
[G3 General] 西村大一:
It fixed mine.
[G3 General] :
I can't do the oven thing because i am afraid of accidents.

I will try to get a bootlooped motherboard or to get thermal paste.

I have a hair dryer which heats up very high!!!! So i did that on the SoC. I will try again when i get thermal paste
[G3 General] engmia:
Don't put your motherboards in the oven, it's a flimsy solution and not a real fix. You might damage the parts even further, I haven't seen the "oven motherboard" fix to work for anyone for more than a few weeks, repeat, and then gradually start dying off.

Rather perform what is described in this topic, although as mentioned by many others, I wouldn't use aluminium foil, but rather a thermal pad. Also thermal paste is nice, but might be an overkill.
[G3 General] DzJoker:
I have lcd discoloration because of the heat, i hope this fix it, anyone faced the same issue?
[G3 General] :
Are you sure if i use thermal paste, it will fix my problem?
[G3 General] 西村大一:
If the temperature is too high or you drop it when you get it out of the oven yes, but otherwise, its been a week and no problem yet.
[G3 General] :
new Problem.

now my lg g3 shows vertical colored lines on the screen, nothing else
[G3 General] engmia:
No, as I said and the other users in the thread -- the trick is applying pressure on the processor chip (right below the camera) because the contact is loose. It's best to do this with a thermal pad which you can find for purchase cheaply online.

At this point, applying thermal paste in my opinion is an overkill, but might further help with cooling of the processor which is what caused the problem in the first place (excessive heat caused damage to the already bad soldier joints in the device over time).

A week is nothing. I don't want to be a bad prophet, but this method usually works for two to three months tops with constant reheatings inbetween. Just check the other threads of people performing the said fix on the device, it dies in most cases and the users end up having to repair the device.

And check this short video with the machine you need and how to perform this repair properly, and why it should be done this way:

[youtube]Shn7LdIrViQ[/youtube]

In general, if you can fix the device with pressure only, its vastly superior since you don't damage it over time.
[G3 General] :
And what if the trick won't work?

---------- Post added at 11:27 PM ---------- Previous post was at 11:23 PM ----------

Mine shows only vertical green lines on the screen(i made a post about that)
[G3 General] :
Any fix????
[G3 General] 350Rocket:
My first g2 had the vertical lines. I had to replace the LCD.

My friends g3 I'm trying to fix is overheating and shutting off. I tried the thermal paste and it still overheats over 100 Celsius. Guess it needs a new motherboard.

Come to think of it, I've yet to have an lg phone without an issue except the g4 I got brand new and sold only a few months later before it got a chance to have the hardware bootloop problem. Nexus 4, 5 , g2 g3 and another g2 all had defects.
[G3 General] 西村大一:
I know Linus' video, but if it works, it ain't stupid. And i also put a metal shim between the SoC and the midframe with thermal compound to dissipate the heat even better. And as of today, it has been 10 days and so signs of failure. Will keep updating with information.
[G3 General] engmia:
I'm not sure about vertical green lines, you might want to clean the display connections with Isopropyl Alcohol.

If it doesn't work, it doesn't work. You keep looking where the actual problem is coming from. If you are sure that it's the chip, you can try a heat gun/hair drier/oven as a last resort.

Like I said, if it works for you that's fine, but I advise you that this is only a temporary solution. I would start saving for a new phone just in case if I were you.

And best not use anything metal there since it's conductive. Thermal pads/plastic/paper work best.
[G3 General] :
First, it shown black display. After i lowly heated the chip using iron, it shown vertical lines. I guess i shall keep going?
[G3 General] 西村大一:
If you say so. I have some new devices coming and my company said I can choose any device, so i have that covered. I am sure however that I've fixed it for the time being, and there is nothing to short circuit on the plastic capsule of the SoC.

NO. As i said, put it in the god damn oven. Why won't you listen?
[G3 General] :
I won't.

I'm not risking my motherboard
[G3 General] 西村大一:
Ok then. You stubborn donkey. Do as you please but don't come back to me crying that you damaged the motherboard beyond repair because you didn't listen to me. You won't heat anything with an iron or with a hair dryer. You need more than 100 or 120 degrees Celsius to melt the solder.
[G3 General] :
Now you act like a kid :/
[G3 General] 西村大一:
If you say so. But this "kid" has a working prototype G3 and you don't. ANd i just found some thin copper shims, so more cooling for the SOC.
[G3 General] :
I don't care.

If you are here just to tell me how to fry my motherboard, them get out.

I better use iron instead of the oven.
[G3 General] 西村大一:
Yes, go ahead and use iron. Damage the SoC. I swear i have never seen someone as 'retarded' as you. Good riddance. Don't even think about replying to this post. I hope you break your motherboard by ignoring me and doing as you please.
[G3 General] :
-_-

---------- Post added at 08:37 PM ---------- Previous post was at 08:34 PM ----------

Why i don't bake the motherboard?

My cousin did the same thing. Same instructions. Had the same problem. The motherboard got destroyed :/
[G3 General] DzJoker:
I have lcd discoloration because of the heat, i hope this fix it, anyone faced the same issue? the thermal past didn't help i'll give you update :'(
[G3 General] :
Replace the LCD
[G3 General] DzJoker:
I'll replace the phone ;)
[G3 General] Frogkiller:
In my G3 D855 I already had the following problems:

Loss of wifi signal unable to connect to wifi

Invalid SIM card and does reboot

Blue screen and reboot

Of the various solutions I saw on the internet that gave the best result was to apply heat to the motherboard with a heat gun
[G3 General] Khalid47:
https://xdaforums.com/lg-g3/general/g3-hardware-problems-solved-bsod-screen-t3597086

permanent fix worked for me not easy but permanent
[G3 General] :
You had to send me this long time ago. I sold my lg g3...
[G3 General] Khalid47:
i found this just today bro and i fixed my phone
[G3 General] 350Rocket:
I fixed my friend's g3 by waiting for his girlfriend to break the screen on hers and then swapped the motherboard over. Problem fixed. The thermal paste and copper shielding both failed to fix it. Still ran crazy hot and powered off from overheating within about 20 minutes of use. I guess the motherboard was too far gone on this one.
[G3 General] Nozomi135:
I'd love to know where exactly the majority of the defects fall, I have a G3 produced in late August 2015 that I bought about a month ago that just out of nowhere began bootloops, demigod green screen, boot verification errors with blue/red notification blinking, god awful screeching noise when it froze. Tested a new battery and reflashed the stock image with the LG flash tool and it was obvious that it was a hardware issue, got a sweet deal on a logic board from a device with a cracked screen that hadn't been used much (was still on Lollipop), this board was produced in mid November 2015. Overall ended up paying $60 for two good logic boards, case, back cover.
[G3 General] rchipmunk:
my attempt

simply, for me this process in fact worked

thank you for sharing
[G3 General] Khalid47:
just keep the pressure on the soc with something that won't compress overtime like paper
[G3 General] xpmule:
Of course it's dangerous.

It's how phones are made LOL

And you are clueless.

Pad ?

That is one of the silliest thing i ever heard.

What you did was effectively make the problem WORSE !

Those waxy pads are a horrible cheap substitute for PROPER thermal paste.

And the entire point of the paste is to CONDUCT heat.

What your pad will be doing is INSULATING the chip.. making the heating problem far faaaar worse.

Also really old versions of Arctic silver actually had silver in them and were dangerous because silver conducts electricity.. later formulations changed that so they were 100% safe.

Trick is.. don't splash it all over the lace HAHAHHAHA

Duh right ?

I never had a problem in my life running a PC repair business etc for over a decade.

No fried devices or short circuits from paste etc.

I have invested vast amounts of time into doing weird things to cool down desktop PC's.

I've done a LOT of modding as well as pencil trace and lots of soldering and used many materials.

I see what the OP did here and by the looks of it it seems to work.

As long as i can trust he created the temp logs under equal circumstances.

His choice of materials was smart too because it would be common stuff we have.

Vs expecting people to go out and buy stuff.

I don't use Arctic silver anymore but i bet pretty much any top premium CPU paste should do the trick.

They are professionally engineered to transfer heat.

From the SOC to the aluminum etc.

Back in the day anytime i seen one of those waxy pads i right away stripped it off and through it in the garbage.

They were very common on OEM built computers on the CPU heat sinks etc back in the old days.

And commonly regarded as horrible garbage that really don't do much.

It's kinda of like applying candle wax too a hot CPU.. it's not doing the intended purpose.
[G3 General] ronzky321:
AFAIK thermal pads are used to conduct heat. Or aren't you reading my post correctly?

You can find it in vrams of laptops, even put on SSD to dissipate heat.

https://en.wikipedia.org/wiki/Thermally_conductive_pad - Just to help you refresh your knowledge since your in the PC business for a decade not knowing what thermal pads are for.
[G3 General] ST Dog:
I don't use Artic Silver anymore either. The whole reason it was so good was the silver, hence the name.

Without silver it just another thermal paste.
[G3 General] AlwaysLucky:
Just a note to those reading this thread:

- This had been done almost three years ago and I established on both my my LS990s that a thermal pad works much much better than paste and/or shims. For more information see this post.

- The Cat.6 F460 model has a covered SoC, and this will not work on that model.

Short version is that thermal paste expands and hardens after heating for first time. The expanding causes problems with antenna connectors unable to make contact, and the hardening locks together the board and frame preventing the phone from flexing (they are meant to slightly flex). Furthermore, it is very difficult to remove the thermal paste if you have send in your phone for warranty work. And people often forget, smartphones have an SoC, not a desktop CPU or GPU! SoC's produce very little heat to cause any real problems. The problem with our G3's is the heat builds up with no way to escape. Therefore, we only really need to "open the drain" so the "drippy faucet" can drain. Only a thermal pad with 6mwk or higher is required to do the job. And I saw mentions of aluminum foil? :eek::laugh:
[G3 General] xpmule:
Conduct to what ?

many are commenting they are *ONLY* putting on a wax pad.

I stand by what i said 101%.

If you apply a pad and it is not "conducting" to another surface to dissipate..

then you are effectively insulating the chip.

Essentially making the problem worse than just leaving it alone.

Maybe "brush up" on common sense here guys LOL
[G3 General] remura:
I can confirm the fix works to some extent.

Alu foil - of course with care ..

but I have applied the fix and it seems to work.

However, root cause of the failure is the heat development in general.

Is it possible to limit the CPU performance a bit in order to reduce the heat development?

: Running my LG G3 on Resurrection ROM 7.1.1 r21

crem
[G3 General] xfim:
I put a metal piece instead of alu foil, thermal paste under it to transfer heat to the metal frame. Works great as a heatspreader and puts consistent pressure on the RAM so that screen doesnt go weird anymore lol.

RAM is bent around the edges- thats the main problem. (see attached pics for details)

Idle temp is about 34c now
[G3 General] lccp:
Works great

Hi,

I did what you described, and after a full day of heavy usage, no more screen flickering. My phones temperature are a little higher than yours, but is lower than before the procedure.

Thank you a lot!
[G3 General] uxairmalik:
Whats the safe cpu temp range for lg g3?
[G3 General] ryandigweed:
Did your screen flicker come back ?
[G3 General] MrCabana:
Mind to tell us exactly what "metal piece" you put? Where did you get it from?

I'm assuming you applied thermal paste between the processor and the "metal piece" + between the "metal piece" and the chassis, right?

You posted that about 2 months ago. Are you still using the phone?

---------- Post added at 03:08 PM ---------- Previous post was at 03:06 PM ----------

We are now almost 2 months after your fix. Is it still working or did the problem reappear?

Thanks.
[G3 General] lccp:
Hi,

The problem reappered a week ago. Now, the flickering happens like once in two days, just need to press the power button twice, to sleep and wake, and it works ok again.

But I've dropped the phone just a day before, so I think that's the reason. I'll open and reinforce the aluminium foil and give feedback. :good:
[G3 General] K2silver:
WRONG

I have D-852 G3 manufacturer date 08/2015 and flickering screen overheating issues repeatedly. Will be doing heat sync job and report results.
[G3 General] IngJulian_RVLX:
2-year Update

So far, my fix has helped a lot of people, and I'm glad for that.

Recently I bought a D-851 Motherboard because the other one was already damage (even before I buy the entire device, RAM bending was the issue) so Still below 40°C and working right on LineageOS 16 (Android 9 Pie).

I will continue to update progress on this MB and possible another G3 I repair on the way...

Greetings!!!
[G3 General] Younex:
What a coincidence, updated today ? X)

Anyway, LG G3 here, started draining battery and overheating while idle , airplane mode, no WiFi/Bluetooth/GPS, barely any apps. Safe mode doesn't help.

Battery usage shows Android system (or OS) , as is the case with other people's G3s

While aluminium heatsink can fix the overheating, I don't think it can fix battery drain, which is cause by too much CPU being used for no reason, hence generating so much heat ?
[G3 General] IngJulian_RVLX:
I fix battery issues flashing a custom ROM (LineageOS is my way to go) and the lastest Bootloader and Modem. On Stock v30 (Android 6 Marshmallow) I notice a tendency to continue using the CPU on Idle (Overheating the device at the same time)

My personal advice: Use a Custom ROM of your choice and update the Bootloader/Modem. Compare them and use CPU-Z to monitor SoC temperature.
[G3 General] Younex:
forgot to mention, affected G3 is on 5.0.

Gonna attempt manually upgrading to 6.0 or 5.1.1, as some users reported it fixed their issues.
[G3 General] sergialess:
Hi!, first of all, thanks for this thread and information. I have two G3 (D855). Motherboards died almost at the same time. I bought two new mobos (24€ / piece), with 3/32 GB.

With the new boards, the phones still tend to get hot. I'm tempted to do this procedure to avoid some heat but I'm afraid that the heat could be dumped straight into the screen, causing other kind of problems. What do you think about it?.

Thanks,

Sergio.
[G3 General] baz2a:
Hello everyone,

My G3 had a lot of similar symptoms and decided to try a trick learned at Experion doing PS4 warranty. I took my mainboard (minus heatshields on front/back) and placed it on a sheet of aluminum foil (after discharging via removing battery and holding power of course) in my oven and turned the oven on to 200F. After my oven got to temp and at 200F for 15 minutes, I turned the temp up to 250F, and repeat up to 275F. I turned the oven off and let it and mainboard completely cool overnight. This morning, I reassembled my phone and have been testing. So far, screen has stayed on and phone has been responsive after being powered on and running 3dmark continuously while working.
[G3 General] abm82:
I had same issue. Its starts days after changing ROM. I have in my mind its software and not Hardware. I was with Stock ROM by Wendell Neves and never had this issue before. After I flashed Stock Rom this issue did come.