every vintage piece I've had that sounded good, sounded better after a quality refurbishing...can't imagine all those 45 year old caps are in top shape...and like the oil change/spark plug analogy, if a cap goes, it may not go gently...so I would at least have a professional make the decision
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.