HELP - Sansui G-7500
 

I have a Sansui G-7500 purchased new in 1978 with intermittent (dirty)
volume & tone controls and
intermittent or dirty switches which cause the output signal to cut in and
out. I've tried cleaning them from inside, but most of these parts look as
though you'd have to destroy them to disassemble them. Does anyone know if
replacement parts are available?

Thanks.

Ed P.