On May 8, 9:34*pm, "Phil Allison" wrote:
If the failed electro really was the cause of Q17 failing, then the unit
should work after replacing it and Q17.

However, if Q17 still overheats then suspect the SC1019 module is blown.

... *Phil

Thanks, Phil. That's also the conclusion I've come to, so it's nice
to get a bit of a sanity check that I'm not overlooking something
obvious.

Right now I'm working under the theory that the SC1019 module is OK,
because I otherwise can't explain why C54 would be burned to a crisp.
A bad PA module could cause excessive current through Q17 but it
shouldn't have affected that capacitor.

I'll let you know what happens when I put it back together.