Screen dead, but touch screen works? - Galaxy S 4 Q&A, Help & Troubleshooting

A few weeks ago, my Galaxy S4 screen started flickering green and it would go back to normal when I would put the phone to sleep. Then yesterday, the screen went completely dead. The vibration motor, button backlights, speaker, and notification lights are responsive, also, I can feel the phone vibrating when I unlock my phone indicating that the touch screen does indeed work. The screen remains completely black through all processes, bootup, recovery, download mode, all black. Can anyone help me with where to begin in the repair process? My gut feeling is that it's the GPU.. is that possible? Is it the digitzer? I appreciate any advice as I have no warranty. :crying:

My guess would be that you need to replace the lcd.

ijrod21i said:
A few weeks ago, my Galaxy S4 screen started flickering green and it would go back to normal when I would put the phone to sleep. Then yesterday, the screen went completely dead. The vibration motor, button backlights, speaker, and notification lights are responsive, also, I can feel the phone vibrating when I unlock my phone indicating that the touch screen does indeed work. The screen remains completely black through all processes, bootup, recovery, download mode, all black. Can anyone help me with where to begin in the repair process? My gut feeling is that it's the GPU.. is that possible? Is it the digitzer? I appreciate any advice as I have no warranty. :crying:
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Even I think your Digitizer went bad.
Press Thanks if I helped
Sent from my Samsung Galaxy S4 via XDA app.

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Samsung Galaxy S4 black screen and responsive to touch and sound

Hello, I am new to the galaxy world and have a question. I have an S4 that turns on and vibrates when powered on. The screen flashes a quick green and then goes black and stays black. It makes noise when the samsung logo comes up. The screen is responsive and all the buttons work. I am curious is to what needs to be replaced or what to try and fix the issue. Is the didgitizer bad or is the whole lcd display bad. I guess any help at this point would be great. Thanks in advance.
had same problem
sconnell80 said:
Hello, I am new to the galaxy world and have a question. I have an S4 that turns on and vibrates when powered on. The screen flashes a quick green and then goes black and stays black. It makes noise when the samsung logo comes up. The screen is responsive and all the buttons work. I am curious is to what needs to be replaced or what to try and fix the issue. Is the didgitizer bad or is the whole lcd display bad. I guess any help at this point would be great. Thanks in advance.
Click to expand...
Click to collapse
I was recently flashing a recovery and at one point I had my battery out and still had my phone plugged in. I look at my phones screen and it is doing this weird flash white static every once in a while thing. Next time i try to start up my phone Boom Black. the only way i found to work around is that i recovered so that it would bring me to the original start up screen where this is an accessability options tab there i was able to turn on screen prompts so it tells me what my finger is on and lets me dbl tap to sect. then with headphones on i spent a day getting it to where i can do h/w testing. still cant figure it out tho

[Q] screen doesn't work after water dmg

So my son got the tablet wet. I let it dry out for a few days then turned it on. Everything seemed fine. It went to home screen but the touchscreen was unresponsive. After about ten second's the screen went negative kinda then blank. It still vibrates and makes noise from notifications and volume buttons. But the screen will not work. Is there a screen replacement I can buy and would that work to fix my problem? If so is there also a video on how to do so? Thank you

[Q] S4 i9505 boots up to black screen, no boot logo

Hey there, I'm having some serious trouble with my S4 i9505, I recently did a LCD and digitizer replacement, and the connectors are connected, but the phone boots up with a green screen (pic included) the blue led notification light turns on, and the boot up music plays, then the home row button backlights turn on, and it also makes notification sounds, so it's alive... but nothing visually so to speak. I've tried almost every troubleshoot suggestion under the sun; but to no avail. Anyone else out there who has experienced this and could give some insight as to a solution? Much appreciated, thanks.
BlaineLondon said:
Hey there, I'm having some serious trouble with my S4 i9505, I recently did a LCD and digitizer replacement, and the connectors are connected, but the phone boots up with a green screen (pic included) the blue led notification light turns on, and the boot up music plays, then the home row button backlights turn on, and it also makes notification sounds, so it's alive... but nothing visually so to speak. I've tried almost every troubleshoot suggestion under the sun; but to no avail. Anyone else out there who has experienced this and could give some insight as to a solution? Much appreciated, thanks.
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Click to collapse
If the connectors are connected then the screen is probably dead.
Lennyz1988 said:
If the connectors are connected then the screen is probably dead.
Click to expand...
Click to collapse
I doubt it, since the screen does flicker when I press the power button rapidly a few rings, and the LCD and digitizer are brand new, replacement parts I had ordered, so not sure what the underlying issue is... going to take it into a repair shop it seems.

G530H bricked or not?

Hello, today i want your help please, my mom was using her phone and suddenly it falls from her hands, just a heigh of 2", maybe less, and then the screen became a black screen, we can still hear the notifications and vibration, butr the screen doesnt show any image, its just black, even with reboot it only show me a black screen and then the dispolay turns off, but the phone still working, any idea of what's happening here?
sorry about my english, im working on it too, in mot a native speaker an its difficult to me to explain precisely what happened
thanks in advance
The display is probably broken .
Take it to a repair shop

Screen replaced, problem when blocking screen

Bought a screen on ebay, took it to a friend that replaced it soo bad that he even cracked it.
Other than that the screen is ok.
But there is a problem when I block the screen pressing the power button, after pressing it again to resume what I was doing it won't turn on.
I mean, it turns on but with stripes and lines black and white.
Initially is all black, then it turn slowly white. the touch digitizer is working but the lcd has serious problems.
Turning completely off the phone reset this.
Someone can help me find out what it can possibly be?
Some wrong contacts?
Thanks so much
Did you fix it?
My D802 after two years of display replacement, started to perform laggy and I can't unlock the screen once it is locked. I can see a low white light in the background but the display dont turn on.

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