Strange fault here. I picked up the above HIFI for use in big shed. When we checked it with my little test speakers, one channel was making all sorts of strange sounds, recurrent, a sort of motorboating. RH seemed OK. I had a NOS output chip in my spares box, so changed it, but fault still the same. Perhaps my speakers? Connected to living room speakers, perfect.
Out to shed, a pair of quite good Samsung speaker.s (early 90's HiFi). Same fault.
I unplugged the black lead whilst I tuned it in, and switch off. Later after making shelf, I switch it on, and noticed LH speaker sounded perfect, but I didn't remember plugging black wire back in. In fact, it was touching the metal cabinet back!
Black wire in correct hole, bad fault, black wire out, silence, blackwire to cabinet, perfect!
Any suggestions? Les