Sorry for the delayed response to your insights. I've been out of pocket.
It is a bit odd, but yes, R110 and R112 both measured 29k ohms which is a bit out of spec, but I doubt enough to cause an issue considering their purpose.
I have definitely identified a S-D short on Q102 which Ludwig guided me towards when he brought up that IC101 should not be on in LIN REG ENs current state.
Maybe this was the original perpetrator. And Q111 gave up trying to settle the 2.9 vs 3.3v battle for superiority going on between the linear regulator and the SMPS.?
Q102 is out of circuit now, awaiting the parts that are arriving later today. So no more measurements at this point.
I am going to start with Q102 and D109 and check quickly to see what happens with a current limited 7v supply.
Will report back.
Thanks!
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Randy, N4OPI
