Hi Guys,
I have a problem with my LG G3 - the screen is flickering randomly every few seconds.
I am not sure if this is a software/hardware problem.
If any of you have encountered this problem and can tell me where is the problem / how he solved it, I will very appreciate it.
Edit: I can not add links so I can't show you the video with the problem
Thanks.
Motherboard problem (we are in the same train CJ)
Anyway. The only fix is to replace the motherboard, or to bake it in the microwave
Johnny TDN said:
Motherboard problem (we are in the same train CJ)
Anyway. The only fix is to replace the motherboard, or to bake it in the microwave
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Click to collapse
You mean oven, because you will blow up the microwave if you do that. Please, for the love of god, don't talk unless you know what to say. Please.
西村大一 said:
You mean oven, because you will blow up the microwave if you do that. Please, for the love of god, don't talk unless you know what to say. Please.
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Oh. Then how you bake your motherboard in the oven then?
Johnny TDN said:
Oh. Then how you bake your motherboard in the oven then?
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On a pan, putting small aluminium foil balls under the motherboard to keep it distanced from the pan, at 182 degrees Celsius for 10 minutes. You must be, excuse the word and no bad intentions, retarded to put metal in a microwave oven.
西村大一 said:
On a pan, putting small aluminium foil balls under the motherboard to keep it distanced from the pan, at 182 degrees Celsius for 10 minutes. You must be, excuse the word and no bad intentions, retarded to put metal in a microwave oven.
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My friend told me to bake my motherboard in the microwave :/
Johnny TDN said:
My friend told me to bake my motherboard in the microwave :/
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Oh my god. Is he still your friend? Tell me he is not. And is he mentally damaged?
西村大一 said:
Oh my god. Is he still your friend? Tell me he is not. And is he mentally damaged?
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Was :/
But leave it. But you know what creates this flickering/no display/fade issue?
I still blame the CPU/GPU
Johnny TDN said:
Was :/
But leave it. But you know what creates this flickering/no display/fade issue?
I still blame the CPU/GPU
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Click to collapse
I happen to know. The PMIC and the SoC have poor quality solder, and if you heat up the SoC during normal usage, it gets brittle, and on the first impact, the connection gets poor and causes the screen flicker. If you wnt a more in-depth explanation, just ask.
西村大一 said:
I happen to know. The PMIC and the SoC have poor quality solder, and if you heat up the SoC during normal usage, it gets brittle, and on the first impact, the connection gets poor and causes the screen flicker. If you wnt a more in-depth explanation, just ask.
Click to expand...
Click to collapse
More in-depth explanation and the fix too!!!
Johnny TDN said:
More in-depth explanation and the fix too!!!
Click to expand...
Click to collapse
The PMIC and the SoC are BGA parts, so they rely on tiny little balls to come into contact with the traces on the PCB. LG used poor quality lead-free solder which becomes brittle with the heating and cooling down cycles because the Snapdragon gets hot. Very. Like the surface of the sun. And with these contractions, the solder starts to, as said before, become brittle and eventually cracks, making the all important connection go bad. And, as everything goes, the SoC needs power to render the 2K display and to run the 4 cores, at 2.5 GHz. And if the PMIC cant supply this power, it starts bugging out, fading the screen and turning black.
The only fix would be for some skilled repair shop to replace the solder with some good quality solder and make sure it doesn't get affected by the high heat output of the SoC. Or, as a temporary fix, you can just place the motherboard SoC side up on 3 balls of aluminium foil in a pre heated oven at 183 or 185 degrees celsius for 10 minutes, let it cool down and use it carefully, no dropping, no long periods of exposure to heat and so on.
西村大一 said:
The PMIC and the SoC are BGA parts, so they rely on tiny little balls to come into contact with the traces on the PCB. LG used poor quality lead-free solder which becomes brittle with the heating and cooling down cycles because the Snapdragon gets hot. Very. Like the surface of the sun. And with these contractions, the solder starts to, as said before, become brittle and eventually cracks, making the all important connection go bad. And, as everything goes, the SoC needs power to render the 2K display and to run the 4 cores, at 2.5 GHz. And if the PMIC cant supply this power, it starts bugging out, fading the screen and turning black.
The only fix would be for some skilled repair shop to replace the solder with some good quality solder and make sure it doesn't get affected by the high heat output of the SoC. Or, as a temporary fix, you can just place the motherboard SoC side up on 3 balls of aluminium foil in a pre heated oven at 183 or 185 degrees celsius for 10 minutes, let it cool down and use it carefully, no dropping, no long periods of exposure to heat and so on.
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Can you send me a picture with the solder part of the motherboard?
Johnny TDN said:
Can you send me a picture with the solder part of the motherboard?
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Unfortunately i don't own a microscope, and don't intend to buy one. Let me give you a picture of what i am trying to tell you. Give me an hour or so.
西村大一 said:
Unfortunately i don't own a microscope, and don't intend to buy one. Let me give you a picture of what i am trying to tell you. Give me an hour or so.
Click to expand...
Click to collapse
Wait. The solder part can be found on the display and touch screen connectors?
Johnny TDN said:
Wait. The solder part can be found on the display and touch screen connectors?
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Click to collapse
Yes, but it is not the defect. The connectors are not the problem here. The current doesn't get to the SoC, the connections to the display are fine.
西村大一 said:
Yes, but it is not the defect. The connectors are not the problem here. The current doesn't get to the SoC, the connections to the display are fine.
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So how i can permament fix it?
Johnny TDN said:
So how i can permament fix it?
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Click to collapse
You don't read, do you? Or are you ignorant? There is no permanent fix unless you own a few tens of thousands of dollars worth of equipment and micro soldering knowledge.
西村大一 said:
You don't read, do you? Or are you ignorant? There is no permanent fix unless you own a few tens of thousands of dollars worth of equipment and micro soldering knowledge.
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Click to collapse
I can go to a local service!
But i want to know 100%...because i don:t like wasting my money :/
Johnny TDN said:
I can go to a local service!
But i want to know 100%...because i don:t like wasting my money :/
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Click to collapse
No, it will not fix your phone totally. But if they know what they're doing, they will temporarily fix it.
西村大一 said:
No, it will not fix your phone totally. But if they know what they're doing, they will temporarily fix it.
Click to expand...
Click to collapse
You said earlier that replacing the solder will permament fix my problem.
Related
Ok guys I bought an EVO 4G off of ebay and I've fixed everything on the phone except for the wonderful USB port that fell off.
Now it was a pretty clean break so it didn't pull anything off of the board. Since I'm on MetroPCS I can't provision the phone completely without fixing the port.
My question would be this, since I don't have a micro heat gun to heat just this area on the board, do you guys think the oven trick could possibly work on the phone to melt the solder enough and reconnect the usb port?
Would it mess up the camera or anything? Not sure, I need some suggestions to see if this would be a stupid idea, a smart idea, or should I just cut my losses and re-sell?
I need help ladies and gentleman.
IMHO..... Hell No. You are gonna fry your evo.
I wouldn't resell, but get it fixed. I found a place nearby that put an OEM usb port back on my evo for $35. Warranty and all and I am back up good as new. My suggestion is that you find someone with the tools to do it right - otherwise you could lose it all.
Where is the place you found that did it for $35? Is it in South Florida?
As an electronics major, you'd be slapped for suggesting that.
I wouldn't recommend it because it MAY be enough to melt the solder, but other smaller components on the board could fail due to overheating, and the camera would most likely crack or fail completely.
teh roxxorz said:
As an electronics major, you'd be slapped for suggesting that.
I wouldn't recommend it because it MAY be enough to melt the solder, but other smaller components on the board could fail due to overheating, and the camera would most likely crack or fail completely.
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LOL yea I figured, but it doesn't hurt to ask cause it does work for computer motherboards
Vyrus69 said:
LOL yea I figured, but it doesn't hurt to ask cause it does work for computer motherboards
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Click to collapse
Well I've never heard of that before, but that would in theory work because the components were designed to withstand higher tolerances; that's why the evo will shut off if it gets to roughly 120 degrees [I don't know the exact temperature].
Vyrus69 said:
Where is the place you found that did it for $35? Is it in South Florida?
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Click to collapse
Sorry no.... SoCal.
As another electronics person its a no, if you put it in the oven, it will fry the camera and such and reflow the solder on the board on all the other components as well, possibly causing even more issues other than just frying the components.
Might have found a solution to the USB port fix.
I'm going to make my own surface mount soldering iron. Since regular soldering irons don't fit in the space, this should by all accounts work flawlessly for this problem.
This should be up and running sometime this week and I'll let everyone know how it comes along, and if it works, I might start up a small side business to fix them lol
Basically, someone gave me a very not so clever idea of microwaving my phone to charge it. Being the bright spark I am, I tried it and it worked! 10 secs = +20%. However it overheated my phone really badly, and now the touchscreen doesn't work on the top half of the screen, the home button doesn't work, there are some wifi problems, like very weak connection (where before it was very strong) and the backlight for the back button is very dim.
Now does anyone know of any fixes, or if HTC might repair it on warranty, (but I rooted the phone so I dunno )
All help is greatly appreciated
This is a joke, right?
SmallMan123 said:
Basically, someone gave me a very not so clever idea of microwaving my phone to charge it. Being the bright spark I am, I tried it and it worked! 10 secs = +20%. However it overheated my phone really badly, and now the touchscreen doesn't work on the top half of the screen, the home button doesn't work, there are some wifi problems, like very weak connection (where before it was very strong) and the backlight for the back button is very dim.
Now does anyone know of any fixes, or if HTC might repair it on warranty, (but I rooted the phone so I dunno )
All help is greatly appreciated
Click to expand...
Click to collapse
Lol u put it in a microwave :what:
Sent from my HTC One X using xda premium
LenAsh said:
This is a joke, right?
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Click to collapse
LOL I wish
I dunno what came over me really, but no, this ain't a joke
sywats said:
Lol u put it in a microwave :what:
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
In my defense, I did gain 20% more battery
Well, you're screwed. Completely.
LenAsh said:
Well, you're screwed. Completely.
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Click to collapse
Serious? you think HTC could repair it?
SmallMan123 said:
In my defense, I did gain 20% more battery
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Click to collapse
But broke your phone in the process
Sent from my HTC One X using xda premium
SmallMan123 said:
Serious? you think HTC could repair it?
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No, it's scrap.
LenAsh said:
No, it's scrap.
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Click to collapse
Aww, thanks anyways tho
I am speechless...
You microwaved the phone to charge it?
I...do not know how to respond to this one. I really don't.
Tigerlight said:
I am speechless...
You microwaved the phone to charge it?
I...do not know how to respond to this one. I really don't.
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Click to collapse
It actually helps to recharge the battery, as it gives the electons in the battery more energy, then charging it from the wall or PC can give, and also allows the flow of electrons to be more smoother, causing less resistance and less overheating. What I didn't realise is that I need to put in just the battery not the whole phone (metal in the phone duh) and yeah, I'm stuffed.
SmallMan123 said:
It actually helps to recharge the battery, as it gives the electons in the battery more energy, then charging it from the wall or PC can give, and also allows the flow of electrons to be more smoother, causing less resistance and less overheating. What I didn't realise is that I need to put in just the battery not the whole phone (metal in the phone duh) and yeah, I'm stuffed.
Click to expand...
Click to collapse
It is a myth that originated from an APPARENT claim made by Apple saying not to do it, which has since become anecdotal evidence that you can and should.
It's nonsense.
Microwaves cause particles to vibrate but do not deliver electrical charge. Added to that the fact your battery contains a variable moisture content that is vaporized inside the sealed container causing either structural damage or full rupture. Plus the heat can and does destroy the protection circuitry built into the battery to prevent under/overcharge.
There is SOME research into using microwaves to produce lithium iron phosphate batteries, but doing it to a lithium cobalt oxide battery is EXTREMELY dangerous and will shorten it's life if not permanently damage it structurally.
It's another example of the power of Facebook to instantly convey the most ridiculous things to millions of people.
Tigerlight said:
It is a myth that originated from an APPARENT claim made by Apple saying not to do it, which has since become anecdotal evidence that you can and should.
It's nonsense.
Microwaves cause particles to vibrate but do not deliver electrical charge. Added to that the fact your battery contains a variable moisture content that is vaporized inside the sealed container causing either structural damage or full rupture.
There is SOME research into using microwaves to produce lithium iron phosphate batteries, but doing it to a lithium cobalt oxide battery is EXTREMELY dangerous and will shorten it's life if not permanently damage it structurally.
It's another example of the power of Facebook to instantly convey the most ridiculous things to millions of people.
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Click to collapse
Shoot. Well HTC said they can't repair it for free and repair costs will exceed the cost of a new phone, so I'm stuffed.
SmallMan123 said:
Shoot. Well HTC said they can't repair it for free and repair costs will exceed the cost of a new phone, so I'm stuffed.
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Click to collapse
It would be totally irreparable in any case. It would have to be a totally replaced phone. You've completely annihilated all metallic components, which is basically all of them.
Even if you had only put the battery in the microwave in any case, you'd have exploded it and destroyed both battery and microwave, or you'd be walking around with a bomb in your pocket.
Tigerlight said:
It would be totally irreparable in any case. It would have to be a totally replaced phone. You've completely annihilated all metallic components, which is basically all of them.
Even if you had only put the battery in the microwave in any case, you'd have exploded it and destroyed both battery and microwave, or you'd be walking around with a bomb in your pocket.
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Its still working tho, like most of the screen works and that, but might unroot and see
SmallMan123 said:
Its still working tho, like most of the screen works and that, but might unroot and see
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Click to collapse
You're lucky it survived. I personally wouldn't ever turn it on again...but...that's me.
Tigerlight said:
You're lucky it survived. I personally wouldn't ever turn it on again...but...that's me.
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See I only put it in for 10 secs, and it restarted by itself, thats the thing
This is like someone says you put your cat in the microwave.....couldn't stand it.....and then say :
Yeah well it wasn't written in the manual !
SmallMan123 said:
See I only put it in for 10 secs, and it restarted by itself, thats the thing
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Click to collapse
It's not a thing. You've cooked it. It may partially function but you've damaged and destroyed the internals.
It's a gonner. Period.
Hello everyone,
I've had my G3 D855 which I have been using for 16 months. Bought it brand new on eBay and everything was going well until a month ago when the screen flickering began.
Tried every trick on YouTube or Google but from last week, it got so bad that I'll be lucky to have it working for 5 minutes in 24 hours.
Being a tech enthusiast, I decided to take the bull by the horn. I decided to either end up fixing it or giving it a proper burial.
After careful and logical study of hardware and software, I reached a conclusion that the problem is hardware related.
Which took me to options like ambience sensor, screen connector, battery, processor among others.
Started by eliminating the suspects from the ones easier to handle like battery, inspection of screen connector and flex etc.
SOLUTION
I do recall that many people recorded success with using paper or any other thing to press down the connectors for camera and ambience/proximity sensors (which in turn adds pressure to the big chip at the back(processor).
Since my phone has fallen countless times (at times from a distance), I assumed some components must have partially detached from the motherboard and cause the issue.
So I got a friend's soldering rework station heat gun and soldering paste.
1. Applied paste to the two connectors for the screen as shown on the first image below and reheated them properly then allowed it to cool.
2. Applied paste generously to the main chip(processor) as shown on the second image below and fired it up before letting it also cool down.
Remember that my screen refused to open throughout the day, haven't been able to use it for almost three days. Once I coupled it and started, walah! :laugh:
Not a flicker, not even once and I'm 13 hours still counting but I believe the problem has been fixed (fingers crossed lol) + I used the phone to type and send this.
I advise you try it but be careful not to shift or move the components being heated so as not to displace them and also reach out to as many people as possible cos there are thousands with the issue and I didn't make a video for YouTube as I didn't know it'll work.
So, good luck to you all:good::good::good:
NB:
Just posted a VIDEO https://youtu.be/tP0ds01ML9I
Please if this works for you or someone else, do leave a comment. Also, if you run into any issue(s), let me know so we'll work it out.
Don't know if the moderators can care to make this thread sticky, it's too valuable to be buried down the heap...
So maybe this flickering issue is due to CPU/GPU overheat, thermal paste appliance seems to be a good option... I'll get my hands on a G3's motherboard with this issue and apply this mod. Will post the results :good:
siredux said:
So maybe this flickering issue is due to CPU/GPU overheat, thermal paste appliance seems to be a good option... I'll get my hands on a G3's motherboard with this issue and apply this mod. Will post the results :good:
Click to expand...
Click to collapse
Not just putting thermal paste but heating the processor back is the key
My advise to those who don't have heat gun or soldering paste is to go to any good technian who has a heat gun in his workshop and let him do it for you. Just show him the places and give him something when he's through. If he's a phone repair person, all the better as he'll know the best technique to apply.
People have had success baking the motherboard in the oven for 10 minutes to fix potential soldering issues with components. At the moment I have used the piece of paper method and it has worked great but will need to use a more permanent method as I plan on selling it.
I've tried the paper method on the adapter near the camera, and, now the display works fine , but my wifi signal strength is lowered. I used to get an excellent signal strength on using wifi at any rooms in my home but now I get excellent signal strength only when I am using wifi near my router.
This sounds very promising and I'm very eager to try this! But I am unfortunately confused, where exactly am I putting the paste on these 3 parts?
Pieddog said:
This sounds very promising and I'm very eager to try this! But I am unfortunately confused, where exactly am I putting the paste on these 3 parts?
Click to expand...
Click to collapse
You'll put the paste over the connectors and the edges where the connectors are soldered to the motherboard then heat.
As for the processor, you put a good amount right on it & as you heat the processor, the paste will melt and drop on the side of the processor to enhance the contact with the motherboard.
ie. You'll put the paste right in the area I circled with red on the attachment pics above.
zayidhs said:
You'll put the paste over the connectors and the edges where the connectors are soldered to the motherboard then heat.
As for the processor, you put a good amount right on it & as you heat the processor, the paste will melt and drop on the side of the processor to enhance the contact with the motherboard.
ie. You'll put the paste right in the area I circled with red on the attachment pics above.
Click to expand...
Click to collapse
Hmm okay thanks, I'll have to go buy a heat gun, they seem pretty cheap. Hopefully I can get this done over the weekend, will report back
siredux said:
So maybe this flickering issue is due to CPU/GPU overheat, thermal paste appliance seems to be a good option... I'll get my hands on a G3's motherboard with this issue and apply this mod. Will post the results :good:
Click to expand...
Click to collapse
Check out the video
burgess_boy said:
People have had success baking the motherboard in the oven for 10 minutes to fix potential soldering issues with components. At the moment I have used the piece of paper method and it has worked great but will need to use a more permanent method as I plan on selling it.
Click to expand...
Click to collapse
Check out the video
Pieddog said:
Hmm okay thanks, I'll have to go buy a heat gun, they seem pretty cheap. Hopefully I can get this done over the weekend, will report back
Click to expand...
Click to collapse
Check out the video
Salman4701 said:
I've tried the paper method on the adapter near the camera, and, now the display works fine , but my wifi signal strength is lowered. I used to get an excellent signal strength on using wifi at any rooms in my home but now I get excellent signal strength only when I am using wifi near my router.
Click to expand...
Click to collapse
Check out the video
zayidhs said:
Check out the video
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Click to collapse
please share the link to video ??
what video? did anyone try this method tho and it worked or not?
Salman4701 said:
please share the link to video ??
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Click to collapse
The link is in the post, I added it
Youssef mo7a said:
what video? did anyone try this method tho and it worked or not?
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Click to collapse
Check the link in the post. Only 6 people have tried with 100% success. They all gave me feedback
https://youtu.be/tP0ds01ML9I
i'm going to subscribe this thread for my future references if my G3 does flickering too..
thanks for sharing this useful tips anyway
Sent from my LG G3 F400L using your data connection.
zayidhs said:
Check out the video
Click to expand...
Click to collapse
Thanks mate, will do!
After lots of research, i finally found a solution and the cause of the problem
The dark display/vertical lines/fading is caused by motherboard.(only if the LCD is fresh bought)
After some hours, i found that the solder was "lost" and it must be reflowed!
After you reflowed the solder from the SoC, place thermal paste with Thermal pad in order to keep it fixed and cool.
*Who's the trouble maker?*
The SoC heats up pretty bad. And that's the cause. Using your phone when it's too hot, it makes the solder loose.
Using thermal paste + thermal pad after reflowing will keep the motherboard cool and it will stop the solder to "loose"
*For people who don't have money for reflow"
There's a trick called "Iron Method"
The video is in spanish, but all you have to do is to put the iron at medium (10-15 minutes) or high (5-10 minutes) on the pins.
Video:
https://youtu.be/tAq16lPT9s0
Attention!!!
DO NOT BAKE YOUR MOTHERBOARD!
It's a temporaly fix and it cause harm rather than good.
And how did you reflow?
西村大一 said:
And how did you reflow?
Click to expand...
Click to collapse
I went to a service
Johnny TDN said:
I went to a service
Click to expand...
Click to collapse
That is the proper way, yes, but for the people who don't have money to go to a service or don't have one in their city, the oven method is still a viable option.
西村大一 said:
That is the proper way, yes, but for the people who don't have money to go to a service or don't have one in their city, the oven method is still a viable option.
Click to expand...
Click to collapse
The oven method is a "live or die" for the motherboard. It either fix it or kill it
There is a method using iron. I used it on mine and it didn't break it. It "healed it" with 10%
Flickering and fade got fixed, as well as black display. If i keep going, it will fix the vertical lines too.
In conclusion , the solder is the fault one.
Both methods sound like just a temporary solution, most useful for getting your data out.
If it works for you, lucky you, but keep in mind this is just a temporary solution.
If it works for you for more than a longer period of time, than you're extremely lucky.
I have the same problem. So what would be a permanent fix solution other than resoldering the cpu to the motherboard?
Babakkardan said:
I have the same problem. So what would be a permanent fix solution other than resoldering the cpu to the motherboard?
Click to expand...
Click to collapse
A new motherboard imo
I went to my technician already twice but the blue screen keeps coming back. I need to go back every week as the technician heats the soc with some paste I suppose. After one day of usage it goes back to blue screen then the phones becomes dead. Is there any fix for this? :crying:
Thank you for the help guys.
Replace the motherboard or heat it up with a iron
Motherboard is quite expensive. Do I need to put thermal pads as this heating method seems to fix the error temporarily.
Hiyaslalabs said:
Motherboard is quite expensive. Do I need to put thermal pads as this heating method seems to fix the error temporarily.
Click to expand...
Click to collapse
Yes definitely try putting thermal pads or plastic. Heating the motherboard is only a final temporary solution, most useful for just backing up data off the device.
engmia said:
Yes definitely try putting thermal pads or plastic. Heating the motherboard is only a final temporary solution, most useful for just backing up data off the device.
Click to expand...
Click to collapse
So if I put a thermal pad how long would the device work?Thanks
Hiyaslalabs said:
So if I put a thermal pad how long would the device work?Thanks
Click to expand...
Click to collapse
I don't know.
It might work for a long period of time, it might not.
If it works you can hope for the best and if you want to prolong the life of the phone, make sure you are not stressing the phone and using it while overheated.
engmia said:
I don't know.
It might work for a long period of time, it might not.
If it works you can hope for the best and if you want to prolong the life of the phone, make sure you are not stressing the phone and using it while overheated.
Click to expand...
Click to collapse
One thing I noticed also when I did the paper trick by putting a piece of paper on the left side of the camera the phone works for awhile too. Any reason for this why it works?
Hiyaslalabs said:
One thing I noticed also when I did the paper trick by putting a piece of paper on the left side of the camera the phone works for awhile too. Any reason for this why it works?
Click to expand...
Click to collapse
The problem is caused by bad quality solder and a phone that tends to go very hot. If you use your phone often while hot, the bad quality solder with the chip mess up after a while and causes you to lose connection.
The pressure you're putting with the paper clip or plastic helps restore the connection by pressing on the chip.
Thermal pad is best since it helps with the cooling also. Avoid metal since they conduct electricity and might interfere with the radio signals.