I recapped a PS Audio power plant some years ago. Yah sure it worked fine and the caps were not bulging. They were however very dry. In fact, you could shake them and they sounded like baby rattles!!! So this nonsense of "it looks good to me" or "don't fix it if it ain't broken" is never something that I assume. 45 years is good luck on your part, but as someone mentioned here. it might not go quietly in the night and that's that. Hostages could be involved.
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.