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820-3330 magsafe blinking

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  • 820-3330 magsafe blinking

    Board 820-3330
    Magsafe is blinking.
    25 seg - OFF
    6 seg - ON

    ADAPTER_SENSE - 3.3V always
    PP18V5_DCIN_FUSE - 16.6V Always

    Diode mode:
    DCIN – 1 and 1
    PPVBUS-G3H – 1 and 464

    Any idea why magsafe is blinking? Already tried 2 dc boards. PP18V5_DCIN_FUSE too low?

  • #2
    Blinking on-off or green-orange? Check current sensing and chrgr boot on the ISL.

    Comment


    • #3
      Blinking on - off. Green - off.
      I have 12.6V stable in PPVBUS

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      • #4
        ACOK high when light is off? SMC_RESET high? Disconnect keyboard to rule that out.

        Comment


        • #5
          ACOK - 3.25V always
          SMC_RESET_L - 3.3V always, but I noted that each 30-35seg is goes to 0V for 0.5seg.

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          • #6
            Was this liquid?

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            • #7
              No. Comes from other workshop with gpu replaced.

              Comment


              • #8
                Oh, fucked up garbage. Isn't there a short on some of the GPU power rails?

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