Macbook Pro 13'' - A1989 stuck at 5v

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  • nosinformatica
    Mai Piangere
    • Sep 2023
    • 2
    • Italy
    #1

    Macbook Pro 13'' - A1989 stuck at 5v

    Hi,
    Preface : My primary job it's not repairing logic board, so please excuse me.
    The Macbook A1989 is stuck at 5v at 0.3A on three usb-c port, and in one port no absorption, so the incriminated chip may be the CD3125.
    I'have read that these mac have two CD3125 in daisy chain.
    How can i confirm my diagnose before reballing it? Someone have experience with this issue?
    Attached Files
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14695
      • Canada
      #2
      Re: Macbook Pro 13'' - A1989 stuck at 5v

      Does the meter jump to this current draw value or does it climb up to this value?

      Review this webpage:

      https://logi.wiki/index.php/CD3215_Bootup_Sequence

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