Black screen - Galaxy Tab Pro 12.2, 10.1, 8.4 Q&A, Help & Trouble

So I bought my wife a new Tab Pro 10.1 model. It started doing this immediately out of the box. Screen works fine for a while. After you lock the device and the screen shuts off, it won't come back on. When you unlock the device everything works, except the screen stays black. Digitizer works, you can swipe to unlock, hear unlock sounds, and even the backlight keys work. Screen just stays off. If you hold power and reboot, the samsung logo shows up and all is good again, until you lock the device. I performed a factory reset, and even played with all settings I could think of. I don't want to flash a custom ROM to see if that's it, as I might need to send it in. Any ideas?

stew1411 said:
So I bought my wife a new Tab Pro 10.1 model. It started doing this immediately out of the box. Screen works fine for a while. After you lock the device and the screen shuts off, it won't come back on. When you unlock the device everything works, except the screen stays black. Digitizer works, you can swipe to unlock, hear unlock sounds, and even the backlight keys work. Screen just stays off. If you hold power and reboot, the samsung logo shows up and all is good again, until you lock the device. I performed a factory reset, and even played with all settings I could think of. I don't want to flash a custom ROM to see if that's it, as I might need to send it in. Any ideas?
Click to expand...
Click to collapse
Send it back. Definitely.

Related

Touch Screen Not Working

I just received my Z1C and I've been having lots of touch screen problems.
When I get to the unlock screen, a lot of times nothing will register on the touch screen. I have to push the power button to turn the screen on and off to get the touch screen to register, and a lot of the time I have to turn the screen on and off more than once to get it to work.
Another issue I'm having is in the settings menu. The top portion of the screen doesn't register any touches. For example, when I tap on the Wifi settings, nothing happens. I have to pull down the screen like half a centimeter, then tapping Wifi will work. This is so frustrating...
Is there any way to fix this without rooting, unlocking bootloaders, or installing a custom rom?
rumthin said:
I just received my Z1C and I've been having lots of touch screen problems.
When I get to the unlock screen, a lot of times nothing will register on the touch screen. I have to push the power button to turn the screen on and off to get the touch screen to register, and a lot of the time I have to turn the screen on and off more than once to get it to work.
Another issue I'm having is in the settings menu. The top portion of the screen doesn't register any touches. For example, when I tap on the Wifi settings, nothing happens. I have to pull down the screen like half a centimeter, then tapping Wifi will work. This is so frustrating...
Is there any way to fix this without rooting, unlocking bootloaders, or installing a custom rom?
Click to expand...
Click to collapse
already tried a hard reset ?
Yes. I've done a factory reset, and nothing has changed. Nothing registers on the unlock screen when I touch it. I have to turn the screen on and off multiple times to get it to work.
I am using the free screen protector that came with the phone. I doubt that's the issue though.
This can't be normal. I'm thinking I just got a lemon...
rumthin said:
Yes. I've done a factory reset, and nothing has changed. Nothing registers on the unlock screen when I touch it. I have to turn the screen on and off multiple times to get it to work.
I am using the free screen protector that came with the phone. I doubt that's the issue though.
This can't be normal. I'm thinking I just got a lemon...
Click to expand...
Click to collapse
if youre done a factory reset and the problem persist im pretty much sure its a hardware problem...
anyway, go to about -> diagnostic and make the touchscreen test.
any issues there?
if i were you, i would reinstall the firmware using SUS to be 100% sure its HW problem.
Already you try a hard reset. I think it is your harware problem. If you have a warranty you can go customer care. I am sure they solve your problems.
not working at all
Hi guys, my diplay is also down - broken - and i have a gesture lock on. I can not unlock the screen. How can I perform a hard reset without touching a display? I was searching whole internet for two days and nothing helped.
If I connect phone to the PC, it must be unlocked.
I need some files from internal storage :/

Rooted & Xposed: Was fine for days, then screen corrupted. Now, screen won't turn on.

Rooted & Xposed: Was fine for days, then screen corrupted. Now, screen won't turn on.
I have an H812 in Canada, and recently rooted my phone with a rooted image. I'm comfortable with using CMD / ADB on Windows, and have been rooting many devices for years. Everything was fine. Used it for days.
Even though my bootloader is locked, I read that I could install Xposed via Flash Fire (in this thread). I did it, and things got a little wonky.
My phone would be fine for hours, and then the screen would get corrupt. I'd see coloured static, and visually everything would break. If I pulled out the battery and put it back in, it would boot up fine.
Over the past few days it started happening more often, until yesterday the phone was basically permanently unviewable.
Now, when I turn the phone on, the screen lights up but stays back. I can't see the boot animation. Nothing. Just a black screen.
The phone boots up fine. I can hear the booting chime. It brings me to my lock screen, and I can feel it vibrate as I enter my password. It receives notifications. It responds to ADB. But for all of this, the screen is black. It's on. Lit. But black.
Any help? Any ideas? It's hard for me to troubleshoot, as I can't ever see the screen.
Warranty it. Common problem with this phone.

screen stays dark with boot sound

dear community
my neighbour gave me his Z1 compact because it did not work anymore.
It was stuck on loginscreen, when i touched the unlock button it vibrated, but nothing else happened.
I could however download all his photos on my Win7PC by just plugging it on USB
but it kept staying unresponsive, no way to get beyond lockscreen
So I used SonyMobileFlasher and unlocked the bootloader without any issues - no errors.
Then I flashed a new firmware obtained through XperiFirm without errors
Now, when I boot, I can hear the boot-melody (??)
but the screen stays dark.
I can connect the phone via flash mode and fastboot mode
I can switch it off by pressing volUp+Power (three vibrates)
from Off i press power, it plays the melody, but the screen stays dark
Is it a hardware damage?
Is there anything I can do for the phone?
thx for ur input
magusberlin said:
dear community
my neighbour gave me his Z1 compact because it did not work anymore.
It was stuck on loginscreen, when i touched the unlock button it vibrated, but nothing else happened.
I could however download all his photos on my Win7PC by just plugging it on USB
but it kept staying unresponsive, no way to get beyond lockscreen
So I used SonyMobileFlasher and unlocked the bootloader without any issues - no errors.
Then I flashed a new firmware obtained through XperiFirm without errors
Now, when I boot, I can hear the boot-melody (??)
but the screen stays dark.
I can connect the phone via flash mode and fastboot mode
I can switch it off by pressing volUp+Power (three vibrates)
from Off i press power, it plays the melody, but the screen stays dark
Is it a hardware damage?
Is there anything I can do for the phone?
thx for ur input
Click to expand...
Click to collapse
Seems like busted display to me. Flash recovery and see if touch screen works in recovery. If not, definitely hw.
thx for ur reply, i flashed TWRP- several trys, now I can see the TWRP lock screen, but when I swipe to log in it vibrates, soon after the screen scrambles away, vertical lines just fade and then crash-off.
seems very much like the screen is defect? not worth replacing, seems like a whole huzzle to replace that screen
pitty, one more device to trash.
i am seriously looking into fairphone2, would be nice to replace the screen so easy.
magusberlin said:
thx for ur reply, i flashed TWRP- several trys, now I can see the TWRP lock screen, but when I swipe to log in it vibrates, soon after the screen scrambles away, vertical lines just fade and then crash-off.
seems very much like the screen is defect? not worth replacing, seems like a whole huzzle to replace that screen
pitty, one more device to trash.
i am seriously looking into fairphone2, would be nice to replace the screen so easy.
Click to expand...
Click to collapse
Maybe not extremely easy, but there are guides in the forum here for screen replacement, if your feel up to it.

Lg G3 screen stuck on boot screen

Very strange problem. I have a LG G3 D855 for 1 and a half years now(rooted)
My phone was at a very low percentage, and I heared it go out. Happens to everybody, nothing strange so far.
I connected it to the charger and I turned it on, i heared the startup noise, but nothing happened. No pincode screen or unlock screen. Stuck at LG life is good screen. I actually was able to take a screenshot, i heared that sound when pressing power and volume down key. I know it is just right away from the main screen, but why is my screen freezing at startup logo? Tried to hard reset and clear all data, then I get a secure confirmation (verify) error. then my led starts to flash red and blue. Battery taking out and still no success.
How to fix this? Also screen is recognizing touch at the startup screen (when it fades away i click on it and it turns brighter)
EDIT: I blindly went into whatsapp and i am able to type and answer calls blindly wtf. Now I got a blue screen, everything is operational, the screen is blue now
Phone is functional, the screen is stuck on boot (life is good screen or blue screen)
How to fix?
Lol, the day after I hit my phone on the screen and restarted it and it worked again! I really dont know how it works again, but lmao! Also my secure boot sector is not working, that problem has nothing too do with this fixed one.

Tab S4 WiFi - Screen not turning back on after timeout. Tablet still running.

Basically most of the post in the title.
I've been playing around, got it rooted with WETA, installed Kali, went back to Stock. In both Kali and now Stock, if the screen times out, or if I hit the power button to lock the screen, it will not come back up and only a hard reboot will get it back.
Same here. I’m rooted but stock rom. Been rooted for a while but this problem only started within last few days. Same exact issue. Booted into safe mode and problem still exists: if screen gets turned off or times out, can not get it to turn back on without hard reset.
I just factory reset mine. I use it for work so I wanted to see if I could reset and restore. During the setup process when it asked for the wifi password I went to the other office to get it and by the time I came back, the screen had timed out and would not come back on still. So, tells me it is not an app and is likely a hardware issue.
Edit: Well, now it seems to be working. I let it sit and restore for a while. Tried to turn the screen on and it took a bit longer than normal but it came on. So far it does not turn the screen on with a screen tap like it used to but it will turn on with a little delay after pressing the power button...
Update on my update: Tablet still has times where pushing the power button or tapping the screen does not turn it on. I basically have to make the motions as if I am opening the magnet case up and the screen will turn on. So, not all the way fixed...

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