MacBook A1989 No power

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  • tommy97
    Senior Member
    • Mar 2023
    • 165
    • United Kingdom
    #1

    MacBook A1989 No power

    Hi,

    I’m having an issue with an A1989 board after water damage, it’s stuck at 5V 0.20A. I’ve checked the measurements, and all readings are the same across all four CD3215 chips. I replaced them one by one (using chips from a donor board), but nothing has changed.

    I don’t need a fully functional board, as the repair is only for data recovery purposes.
    • PP3V3_G3H: 3.3V
    • PPBUS_G3H: 12.26V
    • PP20V_USBC_XB_VBUS 5V
    • PP3V3_UPC_XB_LDO 3.3v
    • PP1V8_UPC_XB_LDOA 1.8V
    • PP1V8_UPC_XB_LDOD 1.8V
    • PP1V1_UPC_XB_LDO_BMC 1.1V
    Can the A1989 work with just one master CD3215? What would be the fastest way to get it powered up for data recovery only?
    ​
    Tags: None
    • tommy97
      Senior Member
      • Mar 2023
      • 165
      • United Kingdom
      #2
      Anyone?

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