Hi MikeG,

I think you've isolated the problem, however, there is one thing you might try. Does the receiver have a re-set button? Try unplugging it, then re-connecting it and powering it up to see if the buzz remains.

I have an aging H/K that seems to develop a hum in one of the main front-channel amps. If I turn off the receiver, then power it up again, the hum disappears and stays that way for a few weeks.

Alan


Alan Lofft,
Axiom Resident Expert (Retired)