Phone working but screen black - G3 Q&A, Help & Troubleshooting

Hello everyone,
I have since the first time an LG G3 (D855) that I root and that works very well.
Recently I bought a new one from a friend for my girlfriend.
He never root it, he reset it and sent it to me by mail.
At the reception, I turn on the phone and there, I have the LED lights, sound start but nothing on the screen.
It reacts when I put the finger on the screen so the touch sensor works.
I try a restart and battery removal but nothing better.
The screen has no shock but I told myself that perhaps during the trip he took a bad cut.
I hope it's just a miswired table, so I dismounted to check, but still nothing.
ThenI try something, I disconnect my phone too and I swapped motherboards.
And then the screen with my card in it work.
While my screen with the motherboards of the phone I just bought stay blank.
So the screen is not broken, perhaps it was a install problem.
So I use LG Flash Tool to reinstall the original rom (following a tutorial )
Everything goes well and ends without worries.
But that didnt change anything, the screen is still black.
Do you have an idea ?
Thank you in advance for your assistance and sorry for my bad english

I just realized that if I strongly illuminates the screen I can see that it works.
It' like brightness was at zero.
It's not a screen problem because when I plug it to the other motherboard brightness is ok.
Someone had this issue?

Same problem here
So I'm having the same problem at the moment, but this is the 2nd time that this has happened to me. Last time. I fixed it by changing charger. It worked for like 2-3 month and then I switched again and the problem came back. I suggest you try a few charges. It took around a week before it got fixed.
Hope it'll work for you.
BTW it was a Nokia charger

Black screen G2 after some seconds even during boot...
EtreRe said:
I just realized that if I strongly illuminates the screen I can see that it works.
It' like brightness was at zero.
It's not a screen problem because when I plug it to the other motherboard brightness is ok.
Someone had this issue?
Click to expand...
Click to collapse
Exactly the same problem on my LG G2.
It often go to black screen, but it's not totally OFF. Touch work, and the screen the same, i noticed using a torch that the brightness when to something like zero, but if i increase the level, it stay dark. Only press power button sometimes come back, but few second later... Dark screen again.
It happens everywhere during boot, in home, in lockscreen, in TWRP.
I tried:
- Change rom
- Flash stock firmware...
- Totally switched off for 2 months
- Detach and reattach the screen
- Test proximity sensor in hidden menu
Nothing worked.
If anyone has an idea...

Related

Wierdest thing happened to my 8525 please help!!!

ok so i searched on the sites for a fading to a white screen problem but it looks like its related to the dpad... my phone was really low on battery last night it kept beeping continuously... so by the time i got to plug it in the screen started to fade to white... now the screen has vslight vertical lines and every time i shut off the phone with the power button and turn it on it comes normal but as soon as u touch the screen it fades to white!!! was this caused by the low battery. i fully charged it but still have the same prob. i tried clearing my storage and that didn't help..what do i do?
white screen
you will need to replace the board for the dpad.
ok thanks. is this the same issue that others are having as well? the wierd thing is half the time it works the other half it doesnt...
I had a similar problem. I had pressed the power button to check the time and screen was white! SR rebooted and after the first splash screen the screen faded to white. I finally founded a product called Pocket Controller http://www.soti.net/ (trial ver works fine) that allowed me to see my phone on my computer. I was then able to backup my data to the storage card. I reflashed the phone and it’s worked fine afterwards.
yeah man thats what happened to me exactly... im reflashing the official wm6 rom now... ill post what happens... thanks
Silverexp said:
I had a similar problem. I had pressed the power button to check the time and screen was white! SR rebooted and after the first splash screen the screen faded to white. I finally founded a product called Pocket Controller http://www.soti.net/ (trial ver works fine) that allowed me to see my phone on my computer. I was then able to backup my data to the storage card. I reflashed the phone and it’s worked fine afterwards.
Click to expand...
Click to collapse
damn it didnt work with me my screen still goes in and out when it chooses to. and it is my dpad b/c it stops working when the screen is gonna go..
Hi,
Try tightening the screw behind the red hang up button on the dpad. There is a component behind there which causes this problem. If tightening doesn't work try loosening. It's all to do with the pressure on the chip. Very odd problem.
Also try squeezing the bottom right hand corner of the phone and SR.
Bonkers solution for a bonkers problem but it certainly fixed one of mine.
Good luck!
yes, the screw tightening/unloosing thing works for me. same thing happened when i dropped my unit. i even completely dismantled it (managed to fix the microsd card spring). something loose with the connections.
niec guys thanks... i will try the tightening and loosening the screw... i tried holding down the bottom right and SR didn't work but thanks anway... i guess i have to buy a screw driver to open this thing up... god i remember when i had to take apart my mpx 220 im getting flashbacks!!!
Had exactly the same problem but mine was due to an phone shop employee dropping it. It would do exactly the same as yours. Sometimes it would work fine and once when I reflashed it the problem went away for a few days but if came back.
I used to control it using Soti pocket controller but them migrated to Net Support as that allowed me to control over wifi. In the end had to get it replaced.

[Q] Phone stuck in screensaver mode

Hi!
I brought my Xperia Play phone USED two years ago and I've never had any problems with it.
However, recently, the phone has started to freeze itself in "screensaver" mode (Where the screen goes black after 15 seconds and locks the phone), but the screen won't light up no matter which button I press. I've had to restart the phone every time this happens.
It's been behaving strange at start up as well, as it sometimes take 20 minutes just for it to turn on, while on other occasions, it won't turn on at all!
Is this problem caused by the battery, or is it the hardware?
Is it with stock firmware?
Vortelf said:
Is it with stock firmware?
Click to expand...
Click to collapse
Yes.
I've never modded it or installed custom firmware/apps.
Have you tried factory resetting it?
Vortelf said:
Have you tried factory resetting it?
Click to expand...
Click to collapse
Yes, but it didn't fix it. The problem still occurs.
tldr: Black screen, no display, everything works "under" (I can answer the phone etc). Not a flex cable problem because occurs randomly, regardless of the slider being open or closed. The problem also occurs during boot up, so rather not a software problem.
I think I have something similiar. Everything was fine until a few days ago the screen didn't want to unlock..or at least I thought it was that.
Basically the phone sometimes works OK but sometimes if I turn off (lock) the screen, it won't go back. To be precise, the phone works and if someone calls me I can pick it up moving the finger where the slider should be, it's just the display doesn't turn on. Same goes for booting, bootloader logo etc, so IMO it's not a software problem.
Strange thing is that it just randomly pops back, sometimes when I move the gamepad slider, sometimes when I put in a jack cable or if I hard reset the phone (remove battery). I've had problems with the flex cable in the past and this time I know that it's not it (no difference if I open/close the slider).
My guess would be some power supply or LCD driver IC issues, because the screen stops working almost everytime if I put the phone into the dock. Moreover, if the screen doesn't work, the orange charging LED is not working (green and blue are OK). The moment the screen starts working, the orange charging LED starts working too.
it's very strange but I'm used to electronics doing strange stuff. Just wondering if I should give a try disassembling the phone and trying to fix it or just buy a new one or something?
I might add that I have bought a new battery ~3 months ago, but it's been working fine to this point. I have tried if the same problem occurs with the old/original battery and it's the same.
well, any ideas?
edit: This video shows something very similiar (except the backlight): https://www.youtube.com/watch?v=m4p0-kv1cxA
Same problem. And I guess this guy has it too.
http://forum.xda-developers.com/xperia-play/help/problem-flex-cable-brightness-t2803991
Any help?

Black Screen

When I was using this phone the screen suddenly turned black. No powering off or anything, the phone was nearly fully charged anyway. Nothing seems to be working anymore. I tried turning it back on but it's completely unresponsive. It won't even charge anymore. I was wondering if there was any solutions to this and if other people where having this problem or did my phone just brick itself
Are you able to get to the bootloader? by pressing volume + and power at the same time. It may be worth trying to flash stock also. I am no expert its just what I would try.
MrPureskill said:
When I was using this phone the screen suddenly turned black. No powering off or anything, the phone was nearly fully charged anyway. Nothing seems to be working anymore. I tried turning it back on but it's completely unresponsive. It won't even charge anymore. I was wondering if there was any solutions to this and if other people where having this problem or did my phone just brick itself
Click to expand...
Click to collapse
try using spflash all format + download flash stock rom
MrPureskill said:
When I was using this phone the screen suddenly turned black. No powering off or anything, the phone was nearly fully charged anyway. Nothing seems to be working anymore. I tried turning it back on but it's completely unresponsive. It won't even charge anymore. I was wondering if there was any solutions to this and if other people where having this problem or did my phone just brick itself
Click to expand...
Click to collapse
look here and flash stock rom again
http://forum.xda-developers.com/elephone-p8000/help/how-to-guideline-install-mtk-drivers-t3334698
Hello there. I have the same problem, phone suddenly stopped to show anything on the screen, it is comleptely black. Tried to reflash few original roms, without a succsess. Replacing lcd did also not solved the problem. Did anyone find a solution?
Thanx
Did you try to format + reflash using spflash? Check out my video walk thru.
https://youtu.be/rzKll-HG6rQ
Sent from my p8000 using Tapatalk
Of course I did. But at no avail. Today, I found out, that the new screen is partially working. I can see very dark picture, it means, I have no back light. Tried to set it up from engineers mode, but no luck.
So the new screen is on, but without back light, and the phone heats pretty much in the top area.
storm525 said:
Of course I did. But at no avail. Today, I found out, that the new svreen is partialy working. I can see very dark picture, it means, I have no backlight. Tried to set it up from engineers mide, but no luck.
So the new screen is on, but without bacjlight, ans the phone heats pretty much in the top area.
Click to expand...
Click to collapse
If so. Try to pull down the statusbar and swipe a bit under the statusbar line, in the top of the screen from left to right, with some luck you will tap the brightness switcher
Gesendet von meinem Metal mit Tapatalk
I can connect to the phone through Vysor, and when I change the brightness level there, there is no change at all. The Phone does not react to any settings change at all.
Tried eragon rom, but still no change....
storm525 said:
Hello there. I have the same problem, phone suddenly stopped to show anything on the screen, it is comleptely black. Tried to reflash few original roms, without a succsess. Replacing lcd did also not solved the problem. Did anyone find a solution?
Thanx
Click to expand...
Click to collapse
Better hope you still have your garantie, because theres legit no way to restore it. You just have to send it back for it to get fixed. This happened to me once and yesterday twice. sadly I am to dissapointed from this. I am never buying an Elephone again ! PS bro it isnt worth sending this hell of a **** peace back. It costs and the blackscreen thing is gonna happen again in 6-8 months. SO go out there and buy yourself a real phone not this bull****. I have to do the same rn.
P8000 unrespnosive Fix
MrPureskill said:
When I was using this phone the screen suddenly turned black. No powering off or anything, the phone was nearly fully charged anyway. Nothing seems to be working anymore. I tried turning it back on but it's completely unresponsive. It won't even charge anymore. I was wondering if there was any solutions to this and if other people where having this problem or did my phone just brick itself
Click to expand...
Click to collapse
Just happened to me with my 3 year old phone. Left overnight with enough charge. Pressed the side button and nothing - held it down to restart and then complete blank.
Repalced the battery about 1 month ago with one from AliExpress for £5.
So using the kit provided with the battery or a watchmakers screwdriver - undo the 12 tiny screws and remove the white surround and then the inner back with the phone's number on it. Next disconnect the battery socket but be careful as it is tiny - use a torch and magnifier if vision not good. Remove the sim card. Wait 10 minutes - did this with the blue light flashing - it stopped finally on disconnection.
Put it all back together and hey presto fully working phone

Trying to restore my Micromax canvas Knight

Hello all,
Though I have read some of the posts in the forum for things like rooting, recovery etc, this is my first post. I need guidance to bring back my Knight in working condition.
A little background:
My phone fell down and the screen got broken. I myself tried changing the screen and I was successful in doing so but my happiness lasted only for some hours. After checking for some two three times, when I switched on, there was no sound from the phone will booting. So, again I disassembled the phone and tried to assemble it but this time there was no display as well as sound. I can see some change in the screen when the power button is pressed, like a little brightness, but nothing happens afterwards. I took it to the service center and initially they said I need to change the battery and the main FPC cable needs to be changed which will cost around 2.5K. I agreed to that, but later they called me up and said that the screen too needs to be changed and in total it would cost 6K. I told them that the screen is new and brought back the phone without doing any repair.
Now I want to troubleshoot and bring back the phone to life and I need guidance.
The current status of my phone is:
1. On connecting the charger the red LED lights up, but the charging sign does not show up.
2. There is slight change in the brightness on the screen when I press the power button. Noting happens after that.
What should be the methodology for troubleshooting?
Thanks in advance.

D851 Screen Fade Out Black - Is my Phone dead?

Well, long time with my old body D851, yesterday after I install TecKcafe everything was wonderful, fast and stable,
Unfortunately after try the camera I realize the screen starts to flicker and fades out black.
I already did a factory Reset – No success
Flash Stock TOT and KDZ – No success
The screen turns On and even the Phone boots, but after a few mins the screen fade out black and the only option is to wait for it to cool down in order to get screen back but just for a couple of minutes, weird is that I dont feel that hot to drive the phone to fade out.
I already research a lot on the internet as well as this forum and see this can be a board issue, does anybody know if there is a permanent solution for this or if I have to start thinking in replace my old loved G3 :angel:
Great phone, just remove the board and reseat all the cables, working as new.
If Admin sees this please close this Thread.
Thanks.

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