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820-3787 distorted image

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  • 820-3787 distorted image

    Have a 820-3787 that has distorted looking apple logo when loading and once loaded login screen only shows couple seconds as seen in pictures but the going to just backlight only shortly after.

    works fine on external. Test known good lcd was used and still same issue.

    what to check first?

  • #2

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    • #3
      Reflow/reball/replace U9650...

      Comment


      • #4
        Just curious does it look like it’s been previously repaired? I had one just like that where the CPU died from doingthe FDMF fix...

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        • #5
          I doubt to be dead CPU, if gets good external video...

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          • #6
            If it's the one I had, I would bet on it. If not, then yeah could be something else I suppose.

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            • #7
              Reflowing U9650 didn't make a difference.

              Yes, unfortunately this board looks like its been worked on before.

              Serial number C0242220072FP541M

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              • #8
                Yep that’s junk that’s the one I had in for “graphics shutdowns”. Has a bad CPU already have replaced all the FDMF6708s made no difference. Time to tell the store that sent it not to send you junk

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