A1706 Black Screen (NOT FLEXGATE)

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  • Stephen
    Meow Meow MEOW!
    • Apr 2020
    • 667
    • United States
    #1

    A1706 Black Screen (NOT FLEXGATE)

    When connected to HDMI it displays a black screen at startup, detects the connection and it is full black screen no image nothing, LCD that is not broken same issue, LCD backlight turns on but just a black screen. So yes there is backlight but no image. This is on external and internal LCD. Swapped out the LVDS connection as well and same issue. Logic board does not have water damage. Any suggestions would be greatly appreciated.
    Also we have 4 good known LCD in stock and tested all 4 and they all have black screens with backlight on. You can hear the charge sound make a noice when you plug in the device to the charger.
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    MEOWING IN THE IMPOSSIBLE UNIVERSE!
    Tags: None
    • SMDFlea
      Super Moderator
      • Jan 2018
      • 20300
      • UK
      #2
      Re: A1706 Black Screen (NOT FLEXGATE)

      Is it the same one one as your other thread https://www.badcaps.net/forum/showthread.php?t=97684
      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

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        • Stephen
          Meow Meow MEOW!
          • Apr 2020
          • 667
          • United States
          #3
          Re: A1706 Black Screen (NOT FLEXGATE)

          Hey SMD no completely different board. Different issue. That board on the other thread didnt even get a backlight to turn on. That board was fixed though. This is a brand new issue I have never come across.
          sigpic
          MEOWING IN THE IMPOSSIBLE UNIVERSE!

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            • Stephen
              Meow Meow MEOW!
              • Apr 2020
              • 667
              • United States
              #4
              Re: A1706 Black Screen (NOT FLEXGATE)

              Bump
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              MEOWING IN THE IMPOSSIBLE UNIVERSE!

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                • piernov
                  Super Moderator
                  • Jan 2016
                  • 4435
                  • France
                  #5
                  Re: A1706 Black Screen (NOT FLEXGATE)

                  Voltage and diode mode to ground measurements?
                  OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

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