Macbook A2289 won't turn on

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  • PITERPENY
    Badcaps Veteran
    • Jul 2023
    • 455
    • Ukraine
    #1

    Macbook A2289 won't turn on

    820-01987
    A cyclic reboot occurs on one of the ports. on the second hangs 5 V and 0.257-0.300 A
    who faced such a problem? What to check ?​

    U3100

    PP3V3_UPC_XA_LDO=3.299v
    PP1V5_UPC_XA_LDO_CORE=1.58v
    PPDCIN_G3H=5v


    U3200

    PP3V3_UPC_XB_LDO=3.290v
    PP1V5_UPC_XB_LDO_CORE=1.58v
    PP3V3_G3H_RTC=3.3v
    PPDCIN_G3H=5v
    Attached Files
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