yashsingh1/xdaforums huggingface dataset:
[G3 Q&A, Help & Troubleshooting] rabbit19:
My D850 has this vertical lines as well. Sometimes it disappears, but right now its there. With that scenario, i can say that you need to replace the lcd assembly. I swithched the lcd of D855(screen fading) with the D850(vertical lines, burn on). Well guess what, the D850 screen has no prob at all after swapping the D855 lcd. I can say that the board of the D850 is good, lcd is the only problem because of the vertical lines and burn on. Unlike with D855 the screen still fades even if I swapped a different lcd, so it's really on the board.

I am thinking now that they compensate the price of their units with the quality of their lcd and board? Compared to Xperia and Samsung, LG costs about $200++ lesser. I started with Optimus G, specs are really great, 2gb ram, 32gb memory, but only with a 4.7 inch lcd. The unit is always hot, that in the long run, the battery really exploded while I was charging it. Same prob with G2 and G3, overheating. I read that it's better to underclock the processors to prevent from overheating, so what's the use of having a 2 to 3gb ram if you can't maximize it. Hope they already fixed it with G5.
[G3 Q&A, Help & Troubleshooting] Rwothzzz:
Am not going to try baking or heating the phone.....huge risk. I might if I have no other option.

I put a piece of plastic as thin as a debit card under the cpu and a rubber on the camera connector and it's working fine.....now 1week and no flicker.....guess if it starts I'll hear it.....But knowing I'll have to buy a new phone
[G3 Q&A, Help & Troubleshooting] siredux:
I was afraid to do such thing but I encouraged myself and did it. Baked MB at 200°C for 7 minutes, leaved it for 30 minutes to cool down. It's been almost 2 weeks and no flickers whatsoever
[G3 Q&A, Help & Troubleshooting] Dante22barneo:
i put old credit cfad under cpu,and piece of paper in the camera connector.doesn't work

If i use oven method,how i must put motherboard?cpu is in top or under?
[G3 Q&A, Help & Troubleshooting] koolaidgrl:
does this have anything to do with the phone's overheating issue? Because I've never had a phone overheat on me as much as this one does. That said, it seems like a good phone otherwise. I've had it for about a month now and it was working great until this afternoon when the display starting flickering & going black. I'm not a tech person at all and have never tried taking apart my phone. I just bought this scratch & dent model and got what I thought was a pretty good deal on it, until this started happening. I thought maybe it was some kind of built in safety to keep the overheating from permanently damaging the phone, but now I'm not sure. Being a layperson, how would you recommend I fix this issue? I spent what for me was a pretty good amount of money on this phone and I really need it to work. Any help you could offer would be greatly appreciated.
[G3 Q&A, Help & Troubleshooting] zayidhs:
CPU up of course!
[G3 Q&A, Help & Troubleshooting] zayidhs:
Sorry to hear about your issue.

Yes the issue comes from either overheating or too many drops which kind of affects the contact of the CPU to the board.

I won't be surprised if it started when you were either watching videos or playing games on high screen brightness.

No, it isn't a safety to protect the phone rather a fault.

Don't be surprised if the issues began manifesting albeit rarely prior to you buying the phone but since that's done, let's work on fixing it.

For you - being layman & all, I'll suggest giving it to a technician to fix but if you want to get your hands dirty, you can try the oven method - the principle is the same as soldering.

You take out the board and put it in the oven - with the CPU facing up. Set it to 8 minutes on 370°F/190°C, then you let it totally cool down and assemble it, cross your fingers and hopefully you'll be smiling once again.
[G3 Q&A, Help & Troubleshooting] yakie996:
Is this still working for you?? :)
[G3 Q&A, Help & Troubleshooting] zayidhs:
Perfectly fine without a flicker or overheat of any kind.....
[G3 Q&A, Help & Troubleshooting] koolaidgrl:
Preheat first?

Do I preheat the oven first? Also, do I set it on a baking sheet or foil or what?

---------- Post added at 08:27 PM ---------- Previous post was at 08:25 PM ----------

Why/how does baking the motherboard fix the flicker/black screen issue and the overheating issue?
[G3 Q&A, Help & Troubleshooting] steelclaw:
After they refused to fix my phone under warranty I took it into my own hands.

Tried the flux method as suggested by the author, although I applied significantly less flux as the amount he used was too risky as it required longer heat flow. Set my heat gun to 350 degrees and heated the center of the chip for about 2 minutes. 3 hours of SoT after, the G3 is behaving well without any issues.

The thing that got me worried was the fact that the PCB was bent inwards as looking at the SoC chip. This is due to overheating and is common among badly designed laptops (and phones I guess). This causes the chip to not make proper contact and thus not work. Sadly, I don't know a way to fix this as it is a product of months of continuous exposure to heat.

P.S. I have to tell you guys that we are pretty lucky that the phone is working at all with this kind of an issue and I am sure that some people will come to that if they continue to expose it to heat even after the screen flickering issue starts to appear. Personally, I'll get rid of my G3 as soon as possible simply because there is no real solution for this.
[G3 Q&A, Help & Troubleshooting] yakie996:
how much degrees C did you set the heater? :)

is this good soldering paste?
[G3 Q&A, Help & Troubleshooting] yakie996:
oven 180°C 10min broke the cpu chip still gets hot when putting in the battery but no screen activities ...
[G3 Q&A, Help & Troubleshooting] Duckscreen:
Wow i baked my phone 5-6min at 180c

my phone now working without need any piece of paper ^^

thank you for your solution

form now i think i'll not play the phone for too hot long time it should help
[G3 Q&A, Help & Troubleshooting] engmia:
This doesn't make a lot of sense to me. I think you just got lucky like all the other people putting motherboards in the oven, and just re soldered a connection on your motherboard by heating it.

Now I'm no electrician expert, but you don't mention about flux that shouldn't be used in PCB's. Basically some kinds of flux contain chemicals in them, which corrode the board over time. They are not suitable for use in PCB's and residue should be extensively cleaned if you use it.

Your flux also doesn't seem like the kind that's okay to use in PCB's. And as far as I know flux is just used to clean the metals, and make a better solder joint by helping the solder stick to the surface. The thing that is actually doing the electrical connection is the lead/solder joint and NOT the flux.

Would you mind clarifying? Thanks!
[G3 Q&A, Help & Troubleshooting] byongjlee76:
I had the screen flickering issue. LG refused to fix under warranty. Added a thermal pad on the chip/processor to see if it was just a heat transfer (lack thereof) issue. phone seems to work fine. It's been over a week now. Hope it continues to work...
[G3 Q&A, Help & Troubleshooting] shrekandroid:
Thermal pad

Does it still work? Can't seem to get any definitive way to solve this problem and hope this is the solution. If it does, what do you mean by thermal pad? Is it just like a piece of foam?
[G3 Q&A, Help & Troubleshooting] byongjlee76:
Yes, still working well. Able to watch Netflix at 100% brightness without issues for several hours straight. Haven't really pushed it more than that... Which is a huge improvement to the 2 minutes of the screen being on before fading out from before i applied the thermal pad.

I've seen youtube videos with people applying thermal paste (like for computer cpus) but thought that might get messy so used thermal pad instead.

https://youtu.be/PH5wCeootNI

(The video i am referring to)

This is what i got:

https://www.amazon.com/gp/aw/d/B00U...hermal+pad&dpPl=1&dpID=31f5NTGlaZL&ref=plSrch

And cut to the size of the chip and applied between the chip and back plate... (Just like the video except switching the paste to the pad.

Let me know if you have any other questions.
[G3 Q&A, Help & Troubleshooting] shrekandroid:
Thanks so much for the video! Would thermal paste work as well? I have some lying around and could use that.
[G3 Q&A, Help & Troubleshooting] byongjlee76:
I assume it would. It seems to work on the video.
[G3 Q&A, Help & Troubleshooting] shrekandroid:
Wasn't working for about an hour. After that, it seems to be running fine. Maybe the paste needed to set.:confused:. Hopefully it stays like this.:good:
[G3 Q&A, Help & Troubleshooting] shrekandroid:
Spoke too soon

Spoke too soon. The flickering has returned sporadically. It sucks that there's no simple 100% method of getting this to work.
[G3 Q&A, Help & Troubleshooting] byongjlee76:
Sorry that its not working for you.

My phone seems pretty solid still (knock on wood).

Did you put enough paste on?
[G3 Q&A, Help & Troubleshooting] mmille24:
So I tried this baking at 360 for 8 mins and waited 25 minutes. It turned on OK, however it suddenly went to the demigod green screen after using for a few minutes. I tried restarting, but it wouldn't take, so I pulled the battery. However, now it won't turn at all. Am I completely screwed?
[G3 Q&A, Help & Troubleshooting] shrekandroid:
Try checking the ribbon connections, but I've heard most people who have baked their boards end up with a fried phone.
[G3 Q&A, Help & Troubleshooting] mmille24:
Yeah. I tried that. No luck.

I had baked it once at a slightly lower temperature. It worked for about a week. So I tried baking again. Looks like it's died. Screw this phone. Will stay away from LG going forward. Thing barely lasted over a year.
[G3 Q&A, Help & Troubleshooting] shrekandroid:
That sucks man. LG phones have great intentions, but fail miserably. LG needs acknowledge their phones are poorly designed and have to step up their customer service/phone replacement.
[G3 Q&A, Help & Troubleshooting] shrekandroid:
Ok, so I have sorta found a solution.

Put some thermal paste(optional I think, but helps with overheating) on the metal behind the screen.

Then, place cut up credit card sized to the cpu.

So it should go body with paste, credit card, motherboard.

That has been working so far, but somewhat demanding apps like Pokemon Go or games heat up the cpu and cause the screen to flicker eventually. Not so demanding apps like Instagram or Youtube run very nicely without heating up the phone too bad.

So if you do this method, be warry of overheating.
[G3 Q&A, Help & Troubleshooting] byongjlee76:
Good...Better than nothing...

My guess is that the thermal paste is probably too thin so isnt touching the back plate enough.

The thermal pad I got is probably thick enough to put a little pressure on the chip while doing a good job on transferring the heat away from the chip.

Tried playing some games for 40 minutes and no flickering... The phone screen did get pretty hot which means the thermal pad is doing great at transferring the heat away from the chip. We'll see how much longer my phone lasts.
[G3 Q&A, Help & Troubleshooting] bodzik155:
I have the same problem. First I've used paper trick. It worked for 2 weeks. Today I applied thermal paste between chip and cover, opened CPU-Z, temperatures below 40*. I thought f@ck yeah now time to sell this sh$t, but 5 mins later it started again. Somehow I managed to open CPU-Z and guess what. Temperatures still low like 45*C and it's flickering. I don't understand anything now. Is only heating causing this or what?
[G3 Q&A, Help & Troubleshooting] lamp159:
"This video is unavailable." :( https://www.youtube.com/watch?v=tP0ds01ML9I

Where did it go?
[G3 Q&A, Help & Troubleshooting] tiguy99:
I hate to say it but this guy is right.

Loved LG from 2013 to 2016 but its time we part ways....

Still keeping my G2 as a backup for now but as much as I love them, their phones have some QC issues

Perhaps they got it right with the V series?!
[G3 Q&A, Help & Troubleshooting] sheikhramnuj:
Can i put aluminum foil instead of thin card at the back of cpu? It will not cause any grounds or short circuit?
[G3 Q&A, Help & Troubleshooting] DJCPTK:
Worked. Successful Indeed!

Worked on my first try. I didn't bother with any paper of plastic crap. Don't put too much solder flux, or too little. Its surprising how less than a small dollop of flux goes a long way. for reference, use about the tip of a pencil worth of flux for the LCD and digitizer connector, and about a pencil eraser worth of flux for the processor. I found it easy to spread using something like a coin, but try using something like a guitar pick so you won't damage any pins.

NOTE:

If you do not have a heat gun, a blow dryer on high heat is sufficient for this job. I didn't have my heat gun on hand, and the blow dryer worked fine!
[G3 Q&A, Help & Troubleshooting] ZG2410:
The video is private

The YouTube video is private. Would you share it please?
[G3 Q&A, Help & Troubleshooting] shrekandroid:
Strange. I have been reading that flux is actually terrible for the motherboard. Get back to us after a while. I would like to see if this method does check out.
[G3 Q&A, Help & Troubleshooting] bodzik155:
How long do you heat it and what's the temperature of air?
[G3 Q&A, Help & Troubleshooting] r2r2o:
Maybe, I will be able to deliver some useful data.

Here are some motherboard pictures with ICs marked and described:

androidauthority.com/lg-g3-teardown-387640

It is worth noticing, that the CPU chip itself is covered by a memory module. I guess, this makes it easier to damage second one when using home-made methods. As far as the re-flow is concerned, I guess we should stick to this chart:

bga-reworking.co.uk/media/wysiwyg/2014-07-10_1321.png

Sorry, to deliver URLs in this form but rules of this forum prevents me from delivering normal, clickable links. .:confused:
[G3 Q&A, Help & Troubleshooting] shrekandroid:
So are you saying flux & heat gun is the way to go?
[G3 Q&A, Help & Troubleshooting] jeremeel2015:
did anyone download this video? https://youtu.be/tP0ds01ML9I i cannot view it anymore :(
[G3 Q&A, Help & Troubleshooting] darito30:
Brother, I deleted the video.

---------- Post added at 10:38 PM ---------- Previous post was at 10:36 PM ----------

Please re-upload the video
[G3 Q&A, Help & Troubleshooting] shrekandroid:
The video was just a guy applying flux to the cpu and heating it. Probably don't need the flux, just be careful of the reflow
[G3 Q&A, Help & Troubleshooting] r2r2o:
I can confirm that reflowing (with hot air and amtech flux, temperature controlled with thermocouple) the cpu&memory ICs helped. However, I have no idea how long it is going to last. I could not find theromopad thin enough in my odds and ends, so I used fair amount of the mx2 thermopaste. Nevertheless, this phone is such a heater that sooner or later it must fail. I use z3c as my daily driver and it never got so hot no matter what I was doing. With G3 it is enough to update few apps to warm up your hands in winter ;)
[G3 Q&A, Help & Troubleshooting] pesaddict:
my screen started playing up yesterday please help what can i do, is there a permenant fix for this ??
[G3 Q&A, Help & Troubleshooting] Babadoo:
Is it still working?? Plus which face will look upwards when i put it in the oven plus should i remove the microphone??
[G3 Q&A, Help & Troubleshooting] siredux:
I gave up on that device tho, worked for 2-3 weeks and flickering started once again. Just put the motherboard upwards, don't remove anything... one thing: if it ever starts to flicker again, don't try this method anymore as it will definitely kill it
[G3 Q&A, Help & Troubleshooting] leo9xs:
I've found an interesting solution:

1st step is heating up the cpu with a heat gun.

2nd step, trim an old bank card (credit or debit, square form) and glue it to thew back of the screen so it pushes the processor enough to prevent unsoldering.
[G3 Q&A, Help & Troubleshooting] shrekandroid:
How long did you heat for? Also, how long has this been working for you?
[G3 Q&A, Help & Troubleshooting] leo9xs:
It tends to flicker but is usable.

23 days until now.
[G3 Q&A, Help & Troubleshooting] engmia:
This is a problem that is definitely between the connections, motherboard and other components.

I would recommend adding paper or plastic first, before trying other techniques.

I remember having a look at the Flux and Solder technique video some time ago, and by my personal knowledge it wasn't done properly.

Flux was way too much and you never really needed it (except maybe a small amount to clean the connections).
[G3 Q&A, Help & Troubleshooting] gixxergabi:
I think that a 1mm thermal pad, be a better solution...
[G3 Q&A, Help & Troubleshooting] byongjlee76:
I would agree. My g3 is still working (though not my daily driver anymore) after using a thermal pad and nothing else after my g3 started acting up.

Check out my previous posts #50, #52 of this thread.
[G3 Q&A, Help & Troubleshooting] AlasPoorYorick:
I find it somewhat odd that this appears to have happened in a wave with this particular phone. So many people reporting having this happen at around the same time, it seems like a design flaw lg should be accountable for.
[G3 Q&A, Help & Troubleshooting] iABDOzz:
my mobile got flickering on the boot screen i can't use it normally at all

I tried this method heated the SOC without using flux for 2-3 Minutes -- now the mobile booting properly but it get's so hot i installed CM rom and Downclocked my cpu to 1.6 Ghz it keeps the cpu under 70 Degrees , so i used the laptop thermal paste on the cpu to make it get better temps , now i'm using it on 1.6 Ghz Cpu , temps on idle is from 40 degrees to 57 , under heavy load it up to 73 not more , is that good temp's or not ?

i want people who tried this methods to give feedback if this flickering happens again or not thnx
[G3 Q&A, Help & Troubleshooting] 808Ruben:
I read through entire article and came to the following conclusions:

1) You can use a piece of cardboard or plastic from credit card on the ribbon connector for a temporary fix. I did this while while waiting for my permanent fix which I will post below. This method seems to work for a few days or maybe up to a week or two at best. For me I only needed it for about 3 days and it worked fine with limited range noticed on wifi and mobile.

2) Heat or bake with or without flux. Seems to work longer from what people have said but far from a permanent fix and as some have said, destroyed the board. I did not try this because I felt it was risky and still a temp fix.

3) Replace the main board. I felt after spending over $700 on this phone in the first place. It would be worth spending a little more. I loved the phone (aside from it's obvious flaws) and I got 2 years out of it after paying over $700 so dumping in another $100 to get up to 2 years more seemed worth it. I did not want to buy a used phone (or board) off eBay because who knows how long before the same problem occurs. So I sought out a brand new board. My search took me to aliexpress where I got a brand new board for $95.00. My phone is now basically a new phone. It still has all of the T-Mobile apps on it which surprised me and comes factory unlocked .Here is the list of models for the G3:

D850 (AT&T)

VS985 (Verizon)

D851 (T-Mobile)

LS990 (Sprint)

So...I replaced the board and all is well. I was a little worried ordering from some Chinese seller on a site I had not used before (I have always used eBay for this type of thing). But I got it fast and it worked great! I feel like I have a new phone again.
[G3 Q&A, Help & Troubleshooting] heszgeri:
Hi everyone!

My phone also has the same problem that yours. I've tried the plastic card method, both over and under the motherboard, but with no use. I was afraid that I would kill the phone with the oven and the heat gun method, so I tried an own version: I cut a 1mm thick thermal pad to the correct size and put it on the processor, and put a 0.5 mm thick copper plate on it. This way it pushes the processor hard enough to keep it in its place, and helps transfering the heat. Before this fix the phone started fading just the moment i turned it on, but noe it's on for half an hour and still working.

The downside is that now I have a darker spot on the screen because the copper plate pushes the back of the screen, so I can choose: I have a working phone with a dark spot in the middle of the screen, or a totally unusable one with nice image quality.

I will post updates later!

UPDATE: I made some pictures of the process, but I cannot upload it because I'm a new user. Here is the link: imgur.com /RtDDdAC
[G3 Q&A, Help & Troubleshooting] ApakmanMarquez:
Your link has nothin to do with this thread

Your link returns pictures of sexy women's photos.
[G3 Q&A, Help & Troubleshooting] heszgeri:
Sorry then :o

Anyways, I fixed the phone the way I described and it still works.
[G3 Q&A, Help & Troubleshooting] zayidhs:
Still going strong

Guys my G3 is still holding up, no flickering whatsoever. Running Fulmics 6.9.

Unfortunately, my 6-month old V10 gave up the ghost.

So, I have me a new Huawei Mate 9 Mocha Brown and I think LG can kiss my ass.
[G3 Q&A, Help & Troubleshooting] :
This method still works?

---------- Post added at 02:26 PM ---------- Previous post was at 02:26 PM ----------

I have Vertical Green lines...only that. All i can see are the Vertical Green Lines going from the top to the bottom
[G3 Q&A, Help & Troubleshooting] 西村大一:
LMAO, did your "fix" work? Then why do vertical green lines appear? I can swear you said you fixed it. Pathetic.
[G3 Q&A, Help & Troubleshooting] :
My cousin still has this problem :/

If you keep "stalking" me and not help me, then leave
[G3 Q&A, Help & Troubleshooting] engmia:
Quit it mate, you are making an ass out of yourself. If we have to be accurate, the method you're suggesting should be written "fix" in parenthesis, since you're just heating up the motherboard and the results are based on luck.

Don't mind him but I don't see what more help do you expect. If putting pressure on the chip doesn't work, you either heat it and hope for the best, take it to a proper repair technician with the necessary (extremely expensive) machines to fix, or the best solution as a member posted on the previous page is just replacing the motherboard.

PS: Using an iron as opposed to oven is almost the same.. Depending on the temperature of the iron, the only difference there is you target the temperature, but in it's essence the repair method is the same and not advised.
[G3 Q&A, Help & Troubleshooting] Ahmed the Pharao:
any updates???

So is it a permanent fix? Any updates? Also the video doesnt seem to work.

Thx:rolleyes:
[G3 Q&A, Help & Troubleshooting] 808Ruben:
Here is the only permanent fix. Mine is still working great. It's basically a new phone.
[G3 Q&A, Help & Troubleshooting] siulee88:
can you upload video again? cant watch it, thx
[G3 Q&A, Help & Troubleshooting] Celestias:
Why take the video down???
[G3 Q&A, Help & Troubleshooting] farhan76242:
Will you please reupload video ?
[G3 Q&A, Help & Troubleshooting] asdfffas:
can you please reupload the video?
[G3 Q&A, Help & Troubleshooting] :
The method isn;t working.

The only real fix is to buy a new motherboard or to ask the services to replace the solder on the motherboard.