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820-00164 not turning on

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  • 820-00164 not turning on

    Have a 820-00164 that has no power and no light on charger. No liquid damage. PPDCIN_G3H is 18V but PPDCIN_ISOL IS 0V

    Have no shorts and already replaced q7010 with no luck.

    What to check next?

  • #2
    Any voltage out of Q7010 on pin 1? Something that very commonly happens on these newer Airs is that D7012 fails and prevents voltage from passing through Q7010. I'd replace it first

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    • #3
      Replaced D7012 but still 0 voltage on pin 1 of Q7010

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      • #4
        R7010/11 ok? There's not much else here that can cause that unless DCIN_ISOL is shorted. Another thing that can happen is broken trace between D7012 and R7010. Also bad Q7010 is possible.

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        • #5
          You should get aprox 7V on Q7010 Gate.
          Check R7010/11 and be sure D7012 is correctly soldered.

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