SM-G930FD | Black screen, display doesn't work. - Samsung Galaxy S7 Questions and Answers

​Hey, something's wrong with my phone.
​When I turn off the phone, the display does not show anything, the touchscreen and buttons work, everything except the display. Black screen.
​And when I reboot the phone many times, about 20-30 times, the display magically turns on and everything works fine. I wanted to know the problem in the display itself or all because of the battery. If the phone fully broken, then how after many reboots it turns on?
ps: The display does not turn off when I restarting the phone without turning it off

Iskak said:
​Hey, something's wrong with my phone.
​When I turn off the phone, the display does not show anything, the touchscreen and buttons work, everything except the display. Black screen.
​And when I reboot the phone many times, about 20-30 times, the display magically turns on and everything works fine. I wanted to know the problem in the display itself or all because of the battery. If the phone fully broken, then how after many reboots it turns on?
ps: The display does not turn off when I restarting the phone without turning it off
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Click to collapse
you might have LED strip problem. not sure btw that I ever heard this problem before.

Related

Backlight to screen stopped working. HALP!

So i am at home playing with my Xoom fine before going to work. I place it in it's padded bag and get in my car to go to work. No bumps, no bangs, no drops. I get into work and pull it out to play with it some more and the screen is dead, or so it seems. Backlight not coming on. So i think it is dead and force a soft reboot, still can see nothing, i try a few more times, finally i notice if i hold it in just the right light i can see the screen fine, it was rebooting, but the backlight wasn't showing.
I let it finish booting and if i hold the screen in just he right light i can see the live wallpaper moving, so i know the screen is on and working, i can click icons and everything, but the backlight still won't light up. Had to stumble my way to brightness in settings, really hard to do when you can barely make out the screen. Set it to auto, nothing, set it to fully bright, stil nothing.
Is this a hardware issue? Or could i have some random software glitch? I rebooted three times now, hoping it would change. Nope. Stock software, no root, nothing. Had it for almost a month now. This sucks.

[Q]Samsung Galaxy S3 screen problems

TL: DR: Screen sometimes is totally black, but otherwise the screen seems to work fine. Sometimes the phone acts completely normal. Sometimes the phone acts completely normal, but the screen is tinted green, but only after it's booted up. I can access download screen with no issue, most of the time I can get into recovery with out a problem, but not always.
I'm brand new to the GS3, but I purchased it last week on ebay (described as fully functional) since my other phone has been giving me troubles. I received it last Thursday (5/15/14), and it seemed to work fine. I have not been able to activate it yet since I did not have 4G sim card, so I've just been playing with it around the house to make sure it works until I get my 4G card from Verizon in the mail.
So Saturday comes along, and I notice that the screen is all black, but makes the usual sounds when you touch the screen. I pull the battery, and boot it back up. The Samsung logo would come up, but none of the boot animation. Nothing after the Samsung logo. It seems that if I push the power button, the phone seems to be functional, but nothing comes up on the screen. Sometimes if I push the power button a bunch of times, I can get the screen to come on. The screen looked normal, and everything worked fine, until I hit the power button. Back to the black screen. I booted into recovery, cleared the cache and did a factory wipe, and it seemed to be completely normal for a while.
I've noticed that sometimes phone acts completely normal (proper colors, screen turns off and on as it should), sometimes it works normally but the screen is tinted green (power button turns off and on the screen as it should), and sometimes, the screen is totally black, but the touch functions work normally.
Since the screen always works at boot (I can see the Samsung logo clearly and with no color distortion, but sometimes the rest of the boot animation is gone, even though I hear the boot music), and there is also no color distortion in recovery or download mode, am I likely looking at a software issue?
It is not rooted, and completely stock on 4.1.2. EDIT:Baseband is VRBMF1.
I have tried to make my problem as clear as possible, but I will clarify anything if necessary.
Thanks.
I downgraded to VRBMB1 with ODIN, and I still seem to be having the same issue (screen goes black, won't come back on), although the green tint problem hasn't happened yet. As long as I leave the screen on, it works fine. I'm thinking that this might be a problem with the power button, although I don't understand why it would allow me into download mode with no issues, but trouble doing much of anything else. I'm probably going to be sending it back for a refund, but if anyone has any suggestions, I'm more than willing to listen. Thanks.

Black screen & no recovery!!!!

Hi all !!! Sorry for my English but I need your help
I commented what is happening with my phone N5 (which for good and evil is always stock without root or anything, with corresponding OTA updates.)
1- Yesterday afternoon at lunchtime while reading a book in playbooks, I notice that suddenly disappears one line and then appeared intermittently. I close the app and noticed the same thing happening on the screen menu. I shut down the cell and turn on again and I thought it must be an application be kidding. But still does.
2 Also yesterday I happened to change the security on the phone screen. After a while of normal operation, try to turn it on the screen with the button, nothing, the screen goes "black", with light and retrolight turned on but no picture no nothing .
Called the cell to see if it works or is turned off and the phone rings but the screen nothing. Try turning it off and on again by holding the on / off / lock button and the phone restarts, but the screen nothing. In one such attempt to do the above it is seen that managed to turn it off. And I get it on and do a normal boot, except that the picture of my screen is changed to the original. Change the lock screen which was previously using (slip). And it seemed that out or some conflict with the lock. In one of those again pressed the ON / OFF / lock as would normally and it starts all over again.
After I magically back to life, I want to make a full wipe as I think it should be an app that is doing some conflict or something. BUT ....
3I turn off the phone and then press the keys VOLUME UP / DOWN and ON / OFF is normally off, squeezed the first screen with the options but options RECOVERY / BOOTLOADER appears in red I choose RECOVERY give the ok with the key and .... andriod robot appears with the legend below that says something (I do not remember well) without or without controls options appears. So its seems thatI dont have recovery.
After that keep pressing the key ON / OFF and the phone turns off and / or reboot normally. All this I did it again to see if the error reappears and looks that I do not have recovery.
The failure of the screen is increasing. I dont know if they are separate problems or is it all the same problem.
Sorry if I was too long but I need the help of you.
UPDATE Now it seems that the screen died, since I do not achieve to turn it on as before, the light and the retrolight its ok. The phone receives calls and notifications but the screen stills black.
Thanks all.
Matias M 73
the android laying on its back IS the atock recovery.
simms22 said:
the android laying on its back IS the atock recovery.
Click to expand...
Click to collapse
thank you simms22 but I need to fix or understand what happend with the screen first.
:good::good:
Matias M 73 said:
thank you simms22 but I need to fix or understand what happend with the screen first.
:good::good:
Click to expand...
Click to collapse
sometimes things just "derp". itll happen more often if you dont reboot your phone often. also, your phone will be a little bit more responsive if it gets reboot once a day or two.
RMA or fastboot it back to stock, if the screen doesnt turn on afterwards then it looks like a hardware issue, open device and reconnect the display.
republicano said:
RMA or fastboot it back to stock, if the screen doesnt turn on afterwards then it looks like a hardware issue, open device and reconnect the display.
Click to expand...
Click to collapse
Thank you Republicano!!
I think too that its a hardware issue. I already see on you tube problems like mine.
Thanks again!!

Screen turn on ,by itself :(

I do not know if it's just me but when I'm playing a game, for example (asphalt 8) and turn off the screen, then reconnects alone but all black but on. Someone can help me ? this happens to me with the original ROM (cos12.1) and also the nightly's (cm12.1)
I have noticed this as well, usually when I put it on a dock at night - the screen is dark but the backlight is on. I have to hit the power button twice to get it to go off
Yes, but i do the same but keeps turn on by itself ,i have to clear the RAM to resolve the problem
Assuming you're not talking about Ambient Display, yeah, I've had this too. Full black screen stays on. Once happened to me throughout the night, drained a ton of battery.
I think turning off Ambient Display stopped it for me.
Thx , has stopped it, but if we have this future the ambiente display ,have to work propely ,must have another solution

Galaxy J700T Black Screen Non Responsive, Flickering, Boots Normally

I've come up with a problem that has perplexed me on my Galaxy J700T. I've looked everywhere for solutions, but none have worked.
The phone's screen will go dark after it boots, but will show the lock screen for a split second. The screen will sometimes flicker back to life for a moment, but then go back out. This can happen a few times. Sometimes it will go back to the same screen, but sometimes it will show the lock screen. Sometimes it will show the lock screen on a flicker, but then go back to whatever normal screen or app it was on before, when I hadn't unlocked it. This only happens when it was on that screen previously though It sort of Flashes the lock screen I suppose you could say. The phone's screen seems to be unresponsive when it's black.
I'll start with what I know:
It isn't solely a hardware issue - The screen does turn on when you first turn on the phone. It shows the boot process. You can boot it into Download mode and the screen will stay on. You can also boot it into Recovery mode and there will be no problems with the screen. The phone can boot normally and the phone will show the whole process. The problem is post boot so I find it hard to believe it's solely a hardware issue, otherwise I should have these problems in the other modes too.
The screen isn't always off - I've managed to actually catch my phone displaying messages at the bottom of the screen for a split second. One such being that it has connected to the internet. This will show for a split second, while the rest of the screen is still dark. The screen appears to otherwise be dark with no light, looking as if it is off.
I've looked into this black screen of death issue I've heard about. I'm not sure if this is it. I've never had the issue before with any other android device I've had. It doesn't seem like it when I look at descriptions of the problem.
I have put the phone through Factory Reset, which hasn't worked in stopping the problem. As soon as the welcome screen shows up to set up my phone, it will go black again. I cleared the cache. I Cleared all data and reset it. Rebooted it in different ways. I did root it.
Would anyone here happen to know what's going on or have any possible solutions?

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