Database Users

S4 Functioning Normally - But Screen Is Blank

This thing is a month old and I really hope I can find a way to fix it. It is rooted so I doubt I can get a replacement...
I've seen other people with screen malfunctions where it shows weird colors after booting, but mine shows nothing. The Samsung boot animation doesn't show, nor does the ATT boot logo (although the sound plays). I can still use my phone by guessing where to touch and everything works fine.
Are there apps that can (with super user access) somehow disable the screen?
Is there a way to factory reset without being able to see what is on the screen? I tried the "Volume Up + Volume Down + Home", but the screen doesn't show anything.
Finally, is there a way to reset the ATT Galaxy S4 via Kies? I haven't been able to find one.
I'm guessing this has to be hardware since the boot logo doesn't show. Surely even if an app disabled the screen, it wouldn't be running before the logo appeared.

ShimmyShimmin said:
This thing is a month old and I really hope I can find a way to fix it. It is rooted so I doubt I can get a replacement...
I've seen other people with screen malfunctions where it shows weird colors after booting, but mine shows nothing. The Samsung boot animation doesn't show, nor does the ATT boot logo (although the sound plays). I can still use my phone by guessing where to touch and everything works fine.
Are there apps that can (with super user access) somehow disable the screen?
Is there a way to factory reset without being able to see what is on the screen? I tried the "Volume Up + Volume Down + Home", but the screen doesn't show anything.
Finally, is there a way to reset the ATT Galaxy S4 via Kies? I haven't been able to find one.
I'm guessing this has to be hardware since the boot logo doesn't show. Surely even if an app disabled the screen, it wouldn't be running before the logo appeared.
Click to expand...
Click to collapse
If the boot logo doesn't show (not the boot animation, but the very first logo when you first power on and it vibrates) then it's hardware. If the screen goes out after that like at the boot animation, then it could be that you messed up or something messed up a system file. This happened to me when I didn't set the permissions on my build.prop, it gave me black screen with blue LED and simply fixing the permissions in Safestrap fixed it.

Try this
http://www.youtube.com/watch?v=sOs5T-vqm3c

Phone screen is black, but phone still "works".. Cannot get screen to come back on!

Phone screen is black, but phone still "works".. Cannot get screen to come back on!
I have no idea what happened, 5 minutes after being in my pocket I pulled it out and the screen was un-responsive.
The notification light is still on, power light, etc. The power button works, I can push and hold and reboot and the two bottom buttons on the phone light up. I was able to "swipe" my password and it vibrated and accepted it, I am getting vibrate notifications too. I just have a black screen and I can't figure out what to do!
I am rooted, but I haven't had any changes to the phone in a few weeks since I had rooted. I tried using http://forum.xda-developers.com/showthread.php?t=2786395 but I cannot figure out how to get the device to show up in the program to use.
I am at a loss on what to do...

No Samsung logo if you remove the battery for 30 seconds, replace it and power on normally?

*Detection* said:
No Samsung logo if you remove the battery for 30 seconds, replace it and power on normally?
Click to expand...
Click to collapse
Nope, no nothing. No logos, no screen flicker, no colors of any sort - just black. The LED goes blue as it boots up, etc, so I know it does power up.. and once it is done I can even swipe my password and it gives the feedback vibrate..
Just in case this was an issue with the root and whatnot I flashed the stock with Odin and I still am getting black screened.
I contacted VZW support last night, and the chat rep told me they would have to just replace the phone. I am guessing this may be a hardware issue.

Yea if there is no logo whatsoever when you first turn it on, it sounds like a hardware issue, not a ROM issue
I forget exactly which logo shows first (S5 I think) that isn't part of the ROM afaik, the Samsung animated logo is the ROM, so if you don't even get the one before the Samsung animation, doesn't sound good
Is it the G900F? If yes, the only thing I can think that might possibly work, is this
http://forum.xda-developers.com/galaxy-s5/general/g900f-debrick-img-lollipop-t3240626
Don't use unless it's the G900F

*Detection* said:
Yea if there is no logo whatsoever when you first turn it on, it sounds like a hardware issue, not a ROM issue
I forget exactly which logo shows first (S5 I think) that isn't part of the ROM afaik, the Samsung animated logo is the ROM, so if you don't even get the one before the Samsung animation, doesn't sound good
Is it the G900F? If yes, the only thing I can think that might possibly work, is this
http://forum.xda-developers.com/galaxy-s5/general/g900f-debrick-img-lollipop-t3240626
Don't use unless it's the G900F
Click to expand...
Click to collapse
I don't believe it's G9000F... and I am fairly certain now that it isn't a software issue since everything else 'loads', just not my damn screen.. lol.
Thanks for your help though

The reason I posted that link, is, if the bootloader has corrupted, it is possible you won't get any logo at all, and that debrick image basically tricks the phone into using the MicroSD card to boot into download mode from, where you can recover the main storage
It should tell you under the battery which model S5 it is
If the screen doesn't even light up, then it sounds more like hardware
See if this gives you access
http://forum.xda-developers.com/showthread.php?t=2786395

It is connector issue.
Either connector is slight loose or if not then need to Change the connector.
My one has same problem.
Solved for less than 10$.
Sent from my SM-G900I using XDA-Developers mobile app

Samsung s5 black screen

Question 1. This just happened right now my s5 is starting up and sometimes it shows the s5 startup powered by android sometimes not after that it proceeds in starting up with the usual sound effects but the problem is the screen is just plain black. Now i believe my phone is proceeding to the homescreen cause i tried to ring it and it did plus my ringtone music played. I tried pulling the battery multiple times and start the phone but still same result. I also tried the taking the battery off and pressing the power button for a minute. also tried the safe mode, but none of them worked. What do you think? is it a firmware or a hardware issue?
Question 2. Im still not sure the cause of the problem. Because of the black screen issue i I wanted to backup my files saved in the phones memory. However my phone is locked through my fingerprint and I guess because of that when I connect my phone to the pc im unable to access my files. Is there anyway I can access my files through a pc and unlock it using my phone's fingerprint alternative password?
TIA

If the initial logo sometimes won't show up, it sounds more like hardware as that is not part of the ROM
If your phone is secured by fingerprint, wait for it to boot, press the home or power key to wake it up, then swipe like normal, if it's just a faulty screen, the fingerprint swipe should still work

*Detection* said:
If the initial logo sometimes won't show up, it sounds more like hardware as that is not part of the ROM
If your phone is secured by fingerprint, wait for it to boot, press the home or power key to wake it up, then swipe like normal, if it's just a faulty screen, the fingerprint swipe should still work
Click to expand...
Click to collapse
hey thanks alot swiping the through the black screen unlocked my phone. so do you think it is a hardware issue I assume its the LCD?
but if ever the LCD is broken , the finger scanner should also not be functional? or im wrong?

The finger scanner is a separate button (Home button)
There are two parts to the screen iirc, the digitizer (Touch) and the panel itself for displaying, could be just the panel if the digitizer is still working
You can use this to control your phone without a screen, might help
http://forum.xda-developers.com/showthread.php?t=2786395

i'm experiencing the same problem again. Before I guess after 40-50 restart I was able to open my s5 with a screen, but now it happened again and the difference is that when I boot it the "Samsung s5 powered by android" rarely shows and it will proceed until the home screen with a black screen?
i have already removed the battery, charged it, changed battery, boot it in recovery and safe mode but still all i'm getting is a black screen.
Any idea how to fix this? Is this a hardware issue already

kenchii17 said:
i'm experiencing the same problem again. Before I guess after 40-50 restart I was able to open my s5 with a screen, but now it happened again and the difference is that when I boot it the "Samsung s5 powered by android" rarely shows and it will proceed until the home screen with a black screen?
i have already removed the battery, charged it, changed battery, boot it in recovery and safe mode but still all i'm getting is a black screen.
Any idea how to fix this? Is this a hardware issue already
Click to expand...
Click to collapse
Hi kenchii17
As you didn't provide answer to @*Detection* 's suggestion for backup, here comes another:
[TOOL] Tickle My Android
To get rid of all this inconvenience, I would suggest a complete reinstall. Clear everything through Recovery and then flash a new Stock ROM via ODIN.
Nice regards.
.

Note 3 N9005 dead or something else?

Hello,
I have a Note 3 which I replaced the LCD screen, the phone turns on but there is where things get wired.
I have some different beaviours:
I turn on the phoen and have the Galaxy Note Image and then goes off (it seems off)
I try recovery mode, gives me the blue letters for recovery and then off again (seems off)
On download mode it says USB device not recognized
Before replacing the screen, after testing turn it on I heard a voice as it was blind people help, but after change the screen makes this. Also remove the power button and then used the battery/charger trick to start the phone but does the same. Sometimes, with the charger, it looks like a loop where the initial image for chaging appears and just loops arround.
Is the motherboard just dead or can I try salvage this one? The download mode is the strangest one, tried inclusive on Windows 7.
If someone could help would be great!
Thank you in advance!

Very difficult to understand the question .
Suggest mobile repair guy.
Sent from my SM-N930F using XDA-Developers Legacy app

Unknown problem with Galaxy S4 i9506

Hi guys
Got a strange problem with my Galaxy S4 (i9506).
The problem is when I try to boot this phone, after Samsung logo there's only blue screen and phone becomes hot.
I think it's mainboard problem but not sure, because charging works, Download/Recovery modes work, I can flash ROM via Odin or Kies without any problems...
I tried to replace mainboard by i9505 mainboard and.. when the frame is not installed, screen works correctly, but when I mount a frame, screen immediately turns off. When I try to boot phone with frame, there's a green strap (?) for a moment and it turns off. Sound works, charging works too, download mode works.
Do you guys have any ideas what's going on?