At that price I'd want to be certain it was those caps. Can you isolate
the main amps or perhaps short the inputs to be certain it isn't coming
from elsewhere?

I've got several amps here a lot older than that on the original smoothing
caps.

--
*When I'm not in my right mind, my left mind gets pretty crowded *

Dave Plowman London SW
To e-mail, change noise into sound.