user 19847
Member
- Joined
- Mar 25, 2023
- Messages
- 32
Here is a link for the service manual for a QSD-1, which might be of help:
https://www.hifiengine.com/manual_library/sansui/qsd-1.shtml
https://www.hifiengine.com/manual_library/sansui/qsd-1.shtml