1. whiteeboi's Avatar
    My Samsung Galaxy S4 (ATT) screen won't turn on. The phone is rooted. I was using my phone and the picture i was looking at began to have green lines appear on it until everything went black. I took out the battery, rebooted, took out sim and sd cards, took the phone apart and disconnected and reconnected everything and my screen still doesn't work. I've been charging it with my wall and computer. Everything seems to work but the screen. Its just black and the touch screen doesn't work. However the back and menu buttons do work even though they are touchscreen too.
    10-22-2014 07:38 PM
  2. Sophiania's Avatar
    green lines appear on it until everything went black.
    You LCD screen is broken, you have to replace with a new one.
    10-22-2014 09:37 PM
  3. whiteeboi's Avatar
    You LCD screen is broken, you have to replace with a new one.
    My LCD works. I tried the heat gun method and it worked for a little bit. The problem seems to be the connection.
    10-22-2014 11:03 PM
  4. Sophiania's Avatar
    My LCD works. I tried the heat gun method and it worked for a little bit. The problem seems to be the connection.
    You mean the LCD FPC connector? That seems not easy to repair.
    10-23-2014 01:07 AM
  5. whiteeboi's Avatar
    You mean the LCD FPC connector? That seems not easy to repair.
    I'm not sure what it's called or where it's located. All I know is that the screen does work sometimes. Currently the screen either works or is green and white lines. I'm sure LCD works. It must be a problem with some connections inside the phone. Don't know which or where.
    10-23-2014 01:45 AM
  6. Sophiania's Avatar
    I'm not sure what it's called or where it's located. All I know is that the screen does work sometimes. Currently the screen either works or is green and white lines. I'm sure LCD works. It must be a problem with some connections inside the phone. Don't know which or where.
    It's really hard to judge. The only way i can occur to is try the LCD on the other S4. If can work well, it's the problem of LCD FPC connector(which connector on the motherboard). If still work with line, it means your motherboard is okay. Just a thought and good luck to you.
    10-23-2014 01:55 AM

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