The unit is very easy to dismantle and work on .
Discharging the Caps is where you need to be careful.
Schematics are available on line-Tech needs an Oscilloscope -Some soldering skill and a Variac wouldn't hurt.
cheers
Sansui AU-717
Bought my AU-717 integrated amp new in 1977. Have used it intermittently over the years and it works and sounds great, 45 years later. The cover has never been off and I still have the owners manual. Any reason to have it serviced? Caps, etc? If so, why? And can you recommend a knowledgeable service resource in the Atlanta area?
I generally live by the “if it ain’t broke, don’t fix it” philosophy but suspect that may not apply here.