MacBook pro 820-2889-a no ram detect

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  • inspirim
    Badcaps Veteran
    • May 2013
    • 282
    • Italy
    #1

    MacBook pro 820-2889-a no ram detect

    This motherboard does not detect a channel of the ram, while the other works well.
    a chip reballing N-Vidia has not solved the problem, connettoer ram looks good.
    you have any idea
    Tags: None
    • diif
      Badcaps Legend
      • Feb 2014
      • 6978
      • England
      #2
      Re: MacBook pro 820-2889-a no ram detect

      I believe one of the slots uses BGA to attach to the motherboard. If it's had a reflow with the memory still attached then the weight causes the BGA to break free.

        Comment

        • inspirim
          Badcaps Veteran
          • May 2013
          • 282
          • Italy
          #3
          Re: MacBook pro 820-2889-a no ram detect

          It was this defect even before reballing
          thanks

            Comment

            • diif
              Badcaps Legend
              • Feb 2014
              • 6978
              • England
              #4
              Re: MacBook pro 820-2889-a no ram detect

              Nobody else has worked on it before you ?

                Comment

                • inspirim
                  Badcaps Veteran
                  • May 2013
                  • 282
                  • Italy
                  #5
                  Re: MacBook pro 820-2889-a no ram detect

                  is some people have attempted repair

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