Phil Anderson wrote:

Thanks one and all for the responses. You've convinced me I am
over my head on this one, and that it is time to find someone with
a clue. Any recommendations in the DC-Baltimore area?

FWIW, this amp was substantially rebuilt by James Bongiorno a few
years back, so I do not think old age is the cause of the
problems. The list of other possibilities nonetheless exceeds my
ken, so it is time for me to seek a professional.

Phil Anderson



Perhaps the best place for GAS service is Gasworks, located in Idaho.
Mike Bettinger has been a GAS fanatic for over 25 years. Their web site
is www.gasaudio.com

Peter Hansen