[Q] Screen replacement / LCD turns off after boot logo - ONE Q&A, Help & Troubleshooting

Hey everyone!
I broke the screen glass, order new lcd+digitizer from ebay, installed it today but:
I can see the Oneplus logo for a few seconds but the lcd turns off after that, before the animation. After that it's just black without backlight.
Somehow it still boots into fastboot and recovery modes normally and I can flash roms and zips there.
Do you have any ideas about what is causing this?
New digitizer is working fine.
I have tested it with the previous lcd which still works and I can boot with it normally.
Also tested with cm11s and ParanoidAndroid, same problem with both of them.
Maybe it's just faulty part.
Help is highly appreciated!
Edit: Video showing the case
http://youtu.be/VcWDCJIkPKQ

I have the same problem, what have you done to fix it ?

Related

Xperia Z3-Black backlight only,no image.

Hello. I got this Z3 with a broken screen, when I got it it had only black backlight, no image, but the LCD cable on the bottom was cut, so I thought that was why it had no image.
So I replaced the screen with a new one, but the issue remains, no image, only black backlight.
Tried restoring the software with Sony PC companion, updated to latest version, but it didn't help.
The phone boots fine, touch works, I can select options and sometimes I even get audio readouts of what is on the screen, just no image.
Is this a dead motherboard or something else? Because I went through a couple of new screens, none worked, so I'm out of the ideas.
I haven't encountered a case like this before, the screen either works or doesn't, the fact that the touch works and I have backlight puzzles me. No backlight or no touch issues are a common case to me, but this is a new one.
Can someone help here?
Thnx
Same problem....
Hi all.I have the same problem and tried few screens with no luck.If I get z3 compact on hd tv via hdmi cable I can see that it works but no image on lcd only backlight and touch works.Did you find out what causes this problem?
egres said:
Hi all.I have the same problem and tried few screens with no luck.If I get z3 compact on hd tv via hdmi cable I can see that it works but no image on lcd only backlight and touch works.Did you find out what causes this problem?
Click to expand...
Click to collapse
It's a faulty LCD connector on the motherboard, in my case. Not the connector itself but the small jumper just above it, it gives power to the LCD, it was broken off.
I had it resoldered. Works fine now.
Could ju point me a bit closer whitch one it was?Did you get no image at all or something like the one on my picture?https://drive.google.com/open?id=0Bym65RPW_fIpeXlkX2NTYUw5SVk This is how mine looks like around the lcd connector.https://drive.google.com/open?id=0Bym65RPW_fIpTXZpWTFKby1Ua3c
egres said:
Could ju point me a bit closer whitch one it was?Did you get no image at all or something like the one on my picture?https://drive.google.com/open?id=0Bym65RPW_fIpeXlkX2NTYUw5SVk This is how mine looks like around the lcd connector.https://drive.google.com/open?id=0Bym65RPW_fIpTXZpWTFKby1Ua3c
Click to expand...
Click to collapse
No image at all, only black backlight ant the touch was responding.
The three square fuses on the bootom of the picture, it's similar in Z3, in my phone one of those was broken off.
Hi guys. I have almost the same problem but inverted. My display and touch is working but i dont have backlight. I can see the screen only if i put light on it.
Maybe u guys have a faulty digitizer responsible for image faulty(no image), better for send repair, flashing new stock firmware will not help
I tried with new digitizer, no luck. Tried jumping the fuse with no luck. Don't know what to try anymore.
GreatVortex said:
I tried with new digitizer, no luck. Tried jumping the fuse with no luck. Don't know what to try anymore.
Click to expand...
Click to collapse
egres said:
Could ju point me a bit closer whitch one it was?Did you get no image at all or something like the one on my picture?https://drive.google.com/open?id=0Bym65RPW_fIpeXlkX2NTYUw5SVk This is how mine looks like around the lcd connector.https://drive.google.com/open?id=0Bym65RPW_fIpTXZpWTFKby1Ua3c
Click to expand...
Click to collapse
Put the motherboard in the oven and bake it for a few minutes, it resold everything, if that's the problem, it will fix it.
For more infos and temperature / time, google it
Same problem here! i have tried new lcd, new flex cable. nathing works, lcd backlight turn on but no image, touch work cause i feel vibration while touching the lcd.
Pleas Helpppp Anyone with the genius mind??????
I'm facing the same problem with my Z3C, a friend of mine told me he applied this method on his phone and it worked but i'm not sure how to do it.
http://www.mobilerdx.com/2015/03/sony-xperia-z3-display-lighting-problem-repair-solution.html
z3 no display but backlight on
by jumperig the fuse near lcd conector it turns on the backlight .There is another fuse surrounding power manager ic which may got open & display ic is not powering.

XIAOMI MI4c stuck at MI logo screen while booting up

Basically, I changed the broken touch screen with a new one (from AliExpress) , and everything was done with extreme caution.
It was replaced successfuly, and its working, but it will not boot up after the change. It's just stuck at Mi Logo screen.
Can't boot into recovery mode, but can in FastBoot.
Bootloader is locked, so I cant flash a new recovery.
Thanks
Update 1: I disconnected touch screen flex cable and the phone booted up normaly. The display is intact and working, but since I detached flex cable I can't use touch input. Any ideas on how to fix this issue???
Sounds like an issue with the display you got. It's it an official one? If yes, try reflashing the frimware or doing a factory reset with the touchescreen connected. Otherwise you might have to contact the seller and send the display back.
If the original cracked screen still kinda works see if you can boot up with it to be sure the issue is the new screen.
I can confirm that the issue is linked with the digitizer. If I disconnect the digitizer flex cable and use my MI-4c with the aid of an usb mouse, then it works just fine. It could well be only a quality problem with cheap replacement lcds but I suspect it could have anything to do with the fact that MI-4i and MI-4c use a very similar display (the lcd flex is different but the digitizer SEEMS just the same one; the physical dimensions and the look of the front are certainly the same and this could lead to some factories actually swapping them): maybe this kind of issue is due to a different digitizer controller or something similar. I'd like to know how to check this theory but unfortunately I don't.
---------- Post added at 10:18 AM ---------- Previous post was at 10:02 AM ----------
I was reading here:
https://stackoverflow.com/questions/7425303/replacing-touchscreen-driver-in-android-kernel
and it seems digitizer drivers are built into the kernel. The kernel is (or it might be) the first thing to be loaded and this explains why we're stuck on MI logo. I'm even more convinced that the issue is linked to the digitizer not being the one for the MI-4c but I haven't the necessary knowledge to go deeper.
F.F.F.....touch screen
****ing...fake... freaky touchscreen.....Battle of Life and Death. Thousands of curses and 2 broken-down push-button cables + 2 displays but I realized it was not my fault ... I finally turned off the touchscreen ... and victory ..... but a little detail ... . if the phone is stuck while pushing you see only the logo .... if you see a logo and under your Android phone's signature phone works and installs

LCD randomly blacks out, only reboot helps

Hello,
I've got new LCD for my OPO and it randomly goes dead. However, touch, sounds, even backlight (it's not pure black, it's illuminated) works fine. I've got just black screen. When I do reboot, it works normally. Also, I've installed another rom, so it's not software problem, thus it's probably some hardware reason. What I can check in the first place?
thanks
z3l said:
Hello,
I've got new LCD for my OPO and it randomly goes dead. However, touch, sounds, even backlight (it's not pure black, it's illuminated) works fine. I've got just black screen. When I do reboot, it works normally. Also, I've installed another rom, so it's not software problem, thus it's probably some hardware reason. What I can check in the first place?
thanks
Click to expand...
Click to collapse
Get a refund/replacement for your new lcd.
Try disabling the Ambient Display & Prevent Accidental Wake-up

Mate 8 screen not working even after replacing it

Hello,
My Huawei Mate 8's display got suddenly broken while I was using it. The screen remains blank whatever I do. However the phone seems to work as the notification led blinks because of my unread messages. And when I press on power button for several seconds, it vibrates so I know it reboots.
I bought a new LCD replacement screen to a well rated ebay seller. I tried to connect the new lcd to the phone's connector, but it remained blank.
It is unlocked, rooted, with a custom rom, but I hadn't done anything on system for about one year. I tried power+VolUp+VolDown to enter in fastboot mode but it remains blank. It really seams to be a hardware failure, but not from lcd part.
- The original screen frame was white but the new one is black. Do you think it may be incompatible?
- Is there a part other than screen and complete motherboard I can replace to have my Mate 8 work again?
Thank you.
I can only answer to this: "The original screen frame was white but the new one is black.". It has nothing to do, my phone was white i changed to black frame and works fine without problems.
Thank you
spid1005 said:
I can only answer to this: "The original screen frame was white but the new one is black.". It has nothing to do, my phone was white i changed to black frame and works fine without problems.
Click to expand...
Click to collapse
It was an hypothesis but I was nearly sure it was false. But thank you for your confirmation.

Mi Mix 3 Bootloop after screen replacement

Hi, I'm new to the forum and to mobile operating system troubleshooting in general. I'm hoping to gain some insight into an issue I'm having.
I broke the screen on my mi mix 3 and after waiting for 2 months it finally arrived from Shenzhen. Yesterday I disassembled the phone, connected the new screen, turned it on, and it just went into a bootloop. I've never changed any part of the operating system on the phone before so I just assumed something was making a poor connection. I unplugged all the leads and plugged them back in again, checked that everything was firmly in place, and ended with the same result.
Fastboot will run sometimes for 10+ minutes and then the phone will just shut off, normal booting it will switch from "Mi" to "MIX" and the animation at the bottom of the screen will freeze after a couple clicks and it will loop back to restarting (but twice it has just ended with an all white screen). Rebooting from Mi Recovery mode results in the same.
From what I've seen I'll just need to follow this and flash the phone : https ://c.mi .com/thread-2504118-1-1.html?t=1590725045909
But my question, is there any possible way to try to fix this issue without loosing all my data and without using a back door method that may just brick the phone?
Thanks for any help, btw I still have the back glass off (I've tried with the fingerprint scanner plugged in, nothing) just in case it could somehow be a hardware issue.
So I've given up on trying to save my data, I don't really care much about that to be honest. I just really like this phone and would like to use it. I tried to flash the phone using Miui's official instructions but I can't unlock the bootloader because I can't download the app Miui's flash tool is requiring me to download on the phone to authorize it.
I guess I'll keep looking for a work around.
TheUnibomber said:
So I've given up on trying to save my data, I don't really care much about that to be honest. I just really like this phone and would like to use it. I tried to flash the phone using Miui's official instructions but I can't unlock the bootloader because I can't download the app Miui's flash tool is requiring me to download on the phone to authorize it.
I guess I'll keep looking for a work around.
Click to expand...
Click to collapse
I changed my display too and it's bootlooping. Did you solve this problem?
I changed my Display too...everything worked fine when I tested it. I unplugged it again to clean the phone and to bring on the glue..when I had the Screen on I restarted and had a black screen...so tried to remove the screen which then just broke...so I ordered a new one and a new display flex cable - I didn't glue the screen yet because I either experience black screens when the screen gets pushed against the backplate or the phone ends in a bootloop -> for the bootloop thingy I just waited for about 10 minutes and then it started normally so there must be something with replacement screens...I don't know whats going on -.-
Hi
Has anyone managed to get this fixed?
The screen works initially but after a while it goes blank, reboot I get the Mix logo not mix 5G. The replacement is a LCD.
Looks like it is stuck in bootloop as inserting sim does phone does not ring when I call it nor front face camera clunk when I slide it

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