820-3332-A No boot

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  • koby058
    Badcaps Veteran
    • Jan 2017
    • 360
    • israel
    #1

    820-3332-A No boot

    Hi gentlemens,

    I have this mac.

    Green and orange on adapter, fans turns on, no boot no chime.
    On the back of the board i found signs of some liquid on U8900 (PPVCORE_S0_GFX_PH2 supplier).

    After clean up i can see that some times i have 0.9v on L8930 and some times i don't.

    When i dont have i can feel U1800 (PCH i guess) Getting very hot.

    Can you point please me on how i can continue here ?

    Please feel free to ask me for any info
    Last edited by koby058; 08-07-2023, 01:39 PM.
    Tags: None
    • koby058
      Badcaps Veteran
      • Jan 2017
      • 360
      • israel
      #2
      Re: 820-3332-A No boot

      Any thing?

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 13830
          • Canada
          #3
          Re: 820-3332-A No boot

          U1800 (PCH i guess) Getting very hot.
          Does not look promising. Best to remove all power -> meter in resistance mode.

          Measure the resistance to ground of this CPU power rail.

            Comment

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