[R-390] Noise when warm ('390A)

[Dennis Wade]

Hi everyone,

      I've noticed lately that after a few hours of operation, a
"frying bacon" or "snap-crackle-pop" noise begins to occur, slowly
increasing as time goes on.  No real difference in band or mode.

      Any quick troubleshooting hints to isolate to a stage?  

      What is the consensus...more likely a cap or a tube?

            Thanks for the advice,

           Dennis
-- 
Dennis L. Wade
KG6ZI
Carmichael, CA