I replaced D13, D10, Q6, Q7 and RFC5 and it works fine again! Not sure which component it was but maybe this will narrow it down for anyone else that has the same problem. My thanks to Gary and Scott at Elecraft for their help.
nz0t wrote
During a QSO on 40 CW tonight I suddenly "let the smoke out" of my KPA100. Under close inspection the only component that looks as if it may be bad is RFC5 which had a very deposit on it. It tests at 1.6 ohms but I don't know if that is bad or not. I would appreciate any help on how to start troubleshooting this. I plan to go through the resistance checks in the build manual - any other ideas?
Bill NZ0T
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