My first piece was a Sansui 3000A also. I loved that receiver. It had a protection circuit that used to come on frequently and I couldn’t figure out why. I was just a kid. It came with a schematic and I had no clue what everything was but I found the protection circuit, looked in the receiver and tweaked a variable resistor, if memory serves me right. I didn’t want to mess things up so I made sure I didn’t tweak it very much. This was around 45 years ago. But that small tweak I made to that coil was enough to make the protection circuit quit coming on. Happy days again!
