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.
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.
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