Very rare electronic circuit board, Level Volume Board F-2660 for Sansui AU9900A / AU11000A. I got it online a few years ago as a spare part for my future restorations, But since I decided not to do restorations anymore I decided to put my stock up for sale.
As you can see in the attached pictures someone had already replaced the bipolar electrolytic capacitors with very high quality Nichicon ES series capacitors...
What I did on the board was to disassemble the volume potentiometer and clean it.
The pictures show that this potentiometer was made just for this Sansui amplifier model, so there is no replacement, just because it is custom made by Alps for Sansui.
Wafers of volume potentiometer are now almost in perfect condition.
But the board is sold as untested.