I don't know that I'd be overly concerned with caps unless they are in the
regulator circuit that supplies dc voltage to the final.
I suspect that the regulator/modulator pass transistor is breaking down when
heated, or something in that circuit.
If it were the bias regulator diodes, the power wouldn't rise that much.



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.740 / Virus Database: 494 - Release Date: 8/16/2004