Need help with strange screen problem [For the smart guys!] - Galaxy S 4 Q&A, Help & Troubleshooting

I have just replaced my samsung galaxy s4 screen lcd and digitalizer. When i boot up the phone the screen has an yellowish white tone.
When i plug out the bottom buttons and the charger cord inside the phone, from the main board. The yellowish screen goes away, and i get a nice white toned screen.
Is this a hardware or software problem?
Does anyone have a clue how to fix it? any sort of contribution would help!
Sorry for bad english, it is not my native language

What happens when you connect the old lcd?

Lennyz1988 said:
What happens when you connect the old lcd?
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Well, the reason i switched lcd was because it broke down when i droped my phone on the floor, so that one doesnt show anything...
I can see my background picture in behind, when the screen gets yellow and i open an app. the phone is also rooted

Related

[Q] New screen not working after replacement

Hi all,
I had a touchscreen issue (sometimes not working) in my HD2 so I ordered a new fabric screen+lcd assemby. I replaced it very carefully but now when I plug new lcd it is not working. Phone is working, buttons, vibration, hear the sound when turning on but there is only backlight on display and just shows black screen. I am sure that display is ok because I tried to put old one (wich was still working before replacement) and it has same issue (backlight works but display is black). Can you give me some ideas what is wrong ????
damaged lcd ribbon connector on mainboard or ribbon not being inserted fully or latched securely
Ty booting to bootloader ...
Help
The flex cable is not attached correctly or the main board is broken and before you close your phone try it. If you can't do this give someone your phone and he will recover for you.
The problem is sloved. I dissasambled all phone and fix it once again and now it works. Anyway I got another problem of white screen on my second device. Did anybody find a solution for white screen ever????
wojcimierz said:
The problem is sloved. I dissasambled all phone and fix it once again and now it works. Anyway I got another problem of white screen on my second device. Did anybody find a solution for white screen ever????
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Click to collapse
Have you tried turning phone on with volume down button pressed???
You should see 4 colors. Try this. I search for you.
http://forum.xda-developers.com/showthread.php?t=2263026
try with this link.
Yes I have read this before but I think that white screen problem is not sloved in this thread. But maybe I could be wrong.

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] 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.
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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.

screen replaced, sometimes i have ghost touch when touching screen, why? :(

i have broken my screen (touch amoled, all the screen) and i bought another one from ebay
looks original and arrived in a samsung service pack box
this new display have something strange in colors when the backlight is low, looks like...don't know how to explain but the colors are not perfect as they were with the factory screen...somehow a little bit green (always when light is low)
anyway sometimes now, like one time every week, after i while i'm using it, the screen go crazy and when i touch it, i see (developer, show touch dots) random touch around my fingers
some days ago this problem happened when i was in a call, me and my interlocutor, we heard a strange noise like bzzzzzrbrbzbrbrbzzzz when i was touching the screen, so there was the touch crazy problem and some strange noise when i was touching the screen
a reboot and everything is ok for some day....
i hope you had understood my poor english
opinions? what can i do? :crying:
ps. i have a 9506
It's probably a fake screen. That would explain your color problem and touch problem.
Pwnycorn said:
It's probably a fake screen. That would explain your color problem and touch problem.
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Click to collapse
the screen resolution is correct and with high backlight the colors are perfect, looks like original on the front and on the back
how to check if it's fake?

S7 edge weird blurry screen

Hi everyone one
I'm not sure this is the right section for my topic, if not I'm sorry and pls direct me.
So I got this phone from my brother whith a weid screen he has no idea how he got this problem, it had a charging issue that he already repaired after that this problem appeared
The phone screen looks a bit weird no scratches or visible damag. but the screen is blurry the contrast is a so hight that the colors are a bit off and are not seamless, and there is this stains as if the screen is brocken (see atached pictures), so far if I hide the upper bar the rest of the screen will looks normal as if there's no problem with it
Any Idea on how to fix this problem is the screen damaged ?
Thanks in advance
No fixing that I doubt, unless the cable for the screen is loose, in which case I still would not try to fix it yourself unless you're very patient and have steady hands.
To fix, you need screen replacement.
According to samsung technician at service center, the purple strain damage are caused by having the phone being press on or under high pressure such as putting the phone inside tight jean pocket or being sit on etc.
Sent from my SM-G935F using Tapatalk
Thanks for the help guys, I opened the phone and checked there is nothing pushing the screen or any visible damage
**update**
Good new the screen went back to wotk notmaly 3 4 days after wotking intensly with the phone using an app called twilight, it helps remove the stains when activated blut it's a blue light filter
Now the phone work well without that app
Thanks

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