Hey guys. I'm pretty desperate so i decided to make this thread.
Here is my problem:
I have changed screen on my phone today. Everything went without any problems since I tried to turn on the phone.
When I tried to turn it on I can see only MI logo on display ... Then after couple of seconds phone will restart automatically and goes into Recovery mode.
I tried to boot it from there without any results. Also tried to reset and wipe data without any results.
The biggest problem is that I cant even get into Fastboot menu by pressing Power button + volume down button. So I cant connect my phone with PC and try to flash new ROM.
Any suggestions? I would be really thankful for any advice.
Thank you very much.
roweruur said:
Hey guys. I'm pretty desperate so i decided to make this thread.
Here is my problem:
I have changed screen on my phone today. Everything went without any problems since I tried to turn on the phone.
When I tried to turn it on I can see only MI logo on display ... Then after couple of seconds phone will restart automatically and goes into Recovery mode.
I tried to boot it from there without any results. Also tried to reset and wipe data without any results.
The biggest problem is that I cant even get into Fastboot menu by pressing Power button + volume down button. So I cant connect my phone with PC and try to flash new ROM.
Any suggestions? I would be really thankful for any advice.
Thank you very much.
Click to expand...
Click to collapse
Did you follow a tutorial for replacing the screen on your device? Where did you get the screen from? Was your screen replacement just the Touch Panel or the full screen replacement with LCD + Touch Panel? Was it an actual Xiaomi part or an aftermarket part? I would take your device apart again and make sure you didn't leave something loose or disconnected.
Quick question. Was you old display still working where you could see what was going on? Like, was it just cracked or was it completely inoperable?
Sent from my Nexus 6 using XDA-Developers mobile app
Thanks for reply. Yes I followed complete tutorial on youtube. Screen is from ebay. It should be original. I replaced full screen ( lcd + touch panel ).
So found simillar problem as mine - due to improper installation of back cover volume up button was pressed which caused that phone went to recovery menu after start ... ( you have to hold volume up + power key to get to Recovery menu). So I tried to dismantle it again but it didnt help. Still have same problem.
Yes old display is alright. I can see everything just touch screen is broken so I cant do anything on it. But I cant imagine this would be problem of display ....
Give your craftsmanship and handiwork the benefit of the doubt and install your old LCD+Touch Panel and see what happens. If you have everything installed correctly with every cable connected to it proper location then you should be able to boot normally.
Sent from my Nexus 6 using XDA-Developers mobile app
It is the second time this happened. Last time it fixed itself after half an hour.
The screen is always pitch black and the device stays warm.
Most of the time it is boot looping with a black screen, the 5G led on the back keeps blinking in different colours. When connected to a PC, in Device Manager I can see two "LG-V500N", then it disappears after a minute, and comes back, repeat.
Sometimes the device boots and stay booted with a black screen, I can tell the device is on because it is listed in "adb devices". Unfortunately I don't have any authorized device to connect to it via adb.
I am not sure what I can try, I have pressed and hold power + vol down many times but the screen remains black.
I also have trouble switching off the device, it seems to either stay on or boot loop.
After letting it rest for a few hours, switching it on shows this screen, with a white/gray line at the top of the screen, and after 5 seconds it switches itself off again.
k3vink3vin said:
After letting it rest for a few hours, switching it on shows this screen, with a white/gray line at the top of the screen, and after 5 seconds it switches itself off again.
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Click to collapse
Get into download mode by powering off the phone and pressing volume up while having it plugged into a PC. Then find a guide to flash a kdz lgup. You will probably lose data or have already lost it
antintin said:
Get into download mode by powering off the phone and pressing volume up while having it plugged into a PC. Then find a guide to flash a kdz lgup. You will probably lose data or have already lost it
Click to expand...
Click to collapse
It seems the phone will not stay in download mode for more than 5 seconds, it powers off after showing the big download mode screen for 5 seconds.
I will try to leave my phone on the charger for some time and then try again.
antintin said:
Get into download mode by powering off the phone and pressing volume up while having it plugged into a PC. Then find a guide to flash a kdz lgup. You will probably lose data or have already lost it
Click to expand...
Click to collapse
I managed to get the device to enter and stay in download mode, however the screen stays pitch black and I am not sure if I should continue flashing.
Would you go ahead and flash it if you were me?
The device is currently on Pie, I will probably try flashing a Pie KDZ first, before an Android 10 KDZ.
Sometimes there is a brief moment where the screen comes on, that's when the LG V50 logo shows before entering download mode.
Did an UPGRADE with V500N11r_00_KT_KR_OP_1017.kdz, which should be the same firmware that the device is already on, it flashed successfully, didn't seem to help, screen remains pitch black.
Did a REFURBISH with the same kdz, didn't seem to help either.
The phone seems to continue to boot loop after the REFURBISH flash. When connected to PC, LG-V500N shows up and then disappears repeatedly. Sometimes I can hear a sound effect being played from the phone, sounds like it has booted and the sound probably came from the initial setup screen.
Seems the phone has stopped boot looping, it is on the initial setup screen. The screen remains pitch black but it responds to touch.
Not sure where I can go from here.
Edited:
The screen has come on briefly once for a few seconds, it is on the initial setup screen. I only had time to switch the language to English, then the screen went black and the device seem to have crashed (no longer makes sound or vibrate as I randomly tap on the screen)
k3vink3vin said:
Seems the phone has stopped boot looping, it is on the initial setup screen. The screen remains pitch black but it responds to touch.
Not sure where I can go from here.
Edited:
The screen has come on briefly once for a few seconds, it is on the initial setup screen. I only had time to switch the language to English, then the screen went black and the device seem to have crashed (no longer makes sound or vibrate as I randomly tap on the screen)
Click to expand...
Click to collapse
I think it's some faulty hardware at this point. You've tried everything possible as of now.
k3vink3vin said:
Seems the phone has stopped boot looping, it is on the initial setup screen. The screen remains pitch black but it responds to touch.
Not sure where I can go from here.
Edited:
The screen has come on briefly once for a few seconds, it is on the initial setup screen. I only had time to switch the language to English, then the screen went black and the device seem to have crashed (no longer makes sound or vibrate as I randomly tap on the screen)
Click to expand...
Click to collapse
Hi! I bought an LG V50 and exactly the same things you described happens to me, the screen starts, it shows the logo, but then it goes completely black, but phone starts, sounds are heard and the touch screen work. But not image, screen is black. Could you find out what hardware defect it is? It's the display module, or will it be the motherboard? Thanks
Nope, I have sold the phone as parts.
H
k3vink3vin said:
I managed to get the device to enter and stay in download mode, however the screen stays pitch black and I am not sure if I should continue flashing.
Would you go ahead and flash it if you were me?
The device is currently on Pie, I will probably try flashing a Pie KDZ first, before an Android 10 KDZ.
Click to expand...
Click to collapse
OW CAN YOU MANAGED TO SATY IN DOWNLOAD MINE ALSO HAVE SAME ISSUE DOWNLOAD MODE GONE AFTER 2 TO 3 SECONDS....PLEASE TELL ME HOW TO STAY...
AND YOUR PROBLEM SOLVED OR STILL
Dntx27 said:
Hi! I bought an LG V50 and exactly the same things you described happens to me, the screen starts, it shows the logo, but then it goes completely black, but phone starts, sounds are heard and the touch screen work. But not image, screen is black. Could you find out what hardware defect it is? It's the display module, or will it be the motherboard? Thanks
Click to expand...
Click to collapse
I got a samsung Note 10 doing this! Took it to local shop! he sprayed some liquid near the proximity sensor area and I saw my phones screen came back to life ;while hiding it he was Telling me if he can repair the screen without changing it he"ll need 20$.. I laughed and told him not interested to repair....
So, first I thought my brother's A51 was water damaged because it was wet a little bit and charging was being interrupted. I left the phone turned off for the night and wanted to look at it again the next morning. The problem is that the screen or something else stopped working.
The screen works fine in Download mode, Recovery mode, or at splash screen with phone's model name, the problem begins when it's booting to Android. It's still stuck at the splash screen. no boot animation, no lock screen visible, just a model name. It's not bricked, because I can still unlock the phone (didn't have a password) and I can hear the unlock sound or charging sound (it started working again).
I tried factory reset through recovery - didn't help, flashing fresh firmware from Frija - didn't help. The only thing that changed is now the splash screen brightness goes down a bit and I noticed that until I am touching the screen so the phone can't lock itself it doesn't turn off the splash screen, but when I press the lock button it turns off the screen and I can't turn it back on, but the phone still works because I can hear charging sounds and it shows up in Device manager.
I also opened it because I wanted to see if there's any water damage, but I didn't see any water marks or burnt components. I cleaned the charging board with alcohol and let it dry but that didn't help.
I'm worried that there's something wrong with the motherboard or the charging board because it has a screen connector.
I can also see that some people here have similar issues:
Unbrick A51 - Stuck on samsung logo
Hi, My phone is stuck on A51 logo for days now it charges - I can enter download mode easily - I can sometimes enter recovery mode some other times it doesn't let me I tried flashing different stock ROMs of android 10, 11 for the phone with...
forum.xda-developers.com
black screen after splash and unable to factory reset, possibly frp?
Apologies for formatting, typing up on my phone during my break at work. To be more specific, I have a samsung a51 that recently had a black screen of death with no known cause. The samsung splash screen as well as the recovery menus alll work...
forum.xda-developers.com
I should also add that I don't have access to settings so I can't unlock OEM and flash custom recovery / ROM. I also cannot downgrade to Android 10 (duh)
I have exactly the same behaviour here.
I ordered a "defect" A51 on Ebay which was not working. I opened it an saw a water damage at the USB-C charging board. Since there was a lot of oxydated parts I ordered a replacement for this board.
After cleaning an replacing the charging board I have the same issue as szerbi. I see the charging screen (while powered off), I can enter download mode and transfering stock firmware using Odin, I can enter recovery mode. While all these states the display works well and I cannot see any damages like a broken display.
I even got it working correctly after several Odin firmware update and recovery mode / factory reset attempts and I could install some apps and set up my google account. I was very happy. But after some hours again: no screen while Android is running.
Now, when Android is running I hear the charging and the screen shot (pressing volume-down + power buttons) sounds and the phone will be visible as a storage device while connecting to a PC.
Conclusion: The display is black while Android is running. Since it was shortly active I assume either a loose contact on one of the flex cable connetions or a water damage at the displays flex board. Unfortunately latter cannot be checked without dividing the display from the display frame. I assume this is an irreversible process.
Hi everyone, i have a weird problem: my phone's screen works perfectly, i can use it in recovery mode and download. It shows also the boot logo and the battery level while charging (if turned off). But when it loads the os the screen turns black and i don't know what to do. I wiped data by recovery and flashed an official rom with odin but the screen remains black.
The phone is 1 year old, does warranty cover this?
I was using my ONE PLUS-6 3 days ago when it suddenly freeze and become unresponsive.
Now every time I am trying to power it on , I am getting 3 randoms start up
1- most: the phone will not respond at all and screen will remain black.
2- The phone will vibrate then i will get start up screen "oneplus logo android logo" then qualcomm crash dump black screen.
3- The phone will vibrate then i will get start up screen "oneplus logo android logo" and phone will stuck there then screen will become black.
My questions:
-How to fix this , is it possible to get this defect fixed and can I access my data on the phone , i have important data that i need to recover.
-I do not want to use MsmDownloadTool mehod right now as I read that i will lose my data on the phone
PLEASE HELP !!