Macbook A2337 820-02016 5.135V 0.275A

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  • sergiobtnrs
    New Member
    • Sep 2023
    • 4
    • spain
    #1

    Macbook A2337 820-02016 5.135V 0.275A

    Hello!

    New to this forum, I have a 820-02016 board which cannot turn on.

    This one does 5.135V ~275mA for a short time, then goes down to ~100mA before shutting down and starting the cycle anew (USB-C multimeter).
    Measured the mentioned points:

    PP3V8_AON_VDDMAIN - ~3.8v
    PPBUS_AON -12.3V then 12.0V and going down during reset
    PPVDD_SOC_S1 - ~0.67v
    PP1V8_S2 - ~1.8v
    PP2V5_AWAKE_NAND - 2.5v
    PP1V25_S2 - 1.22v
    PP3v3_S2_UPC - 3.28v
    PP5v_S2 - 5.2V
    PP3v3_UPC0_LDO - 3.25v
    PP3v3_UPC1_LDO - 3.25v
    PP1v5_UPC0_LDO_CORE - ~1.5v
    PP1v5_UPC1_LDO_CORE - ~1.5v

    I clarify that I have not found any short in the U8100 line or in the U7700 line.
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14201
      • Canada
      #2
      Re: Macbook A2337 820-02016 5.135V 0.275A

      Some of the newer macbooks require a known good and charged battery to boot the logic board. This model may be one of them. Check the youtube videos by Tim @ TCRS on this topic.

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