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  1. #1
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    3437 Low Res to Gnd on 3v42

    I have a 3437 air board, ppbus was only 0.8V, 3v42 - 1.3V
    PPDCIN 3v42 - 15.55V
    Resistance to ground on 3v42 was 30 ohms
    KG board measured 22 kohm

    Started removing stuff and now I'm out of stuff to remove.
    I ended up removing ISL, SMC, U1900, U1950, debug, IO conn, tpad conn, U5110
    Checking resistance to ground after each component. 60 ohms now.

    I'm thinking it must be leaky to ground in the CPU or internal trace.

  2. #2
    Junior Member
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    Re: 3437 Low Res to Gnd on 3v42

    Solved, it was C5002. Visibly burnt I just really love reballing SMC

  3. The Following 2 Users Say Thank You to BrickBreaker For This Useful Post:

    kjchatman (07-19-2019), mitchW (07-22-2019)

 

 

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