From your preious posts, my takeaway is that you are using the Luxman as a tuner. After 20 years, it could probably use with a good cleaning and a tuner re-calibration. I am not sure who is a good tech in your part of the state. In Peekskill, there is a company called the the Soundsmith , that specializes in vintage Luxman, McIntosh, and Marantz products. I used them 4 years ago to refurbish a Marantz 2216B (circa 1978) and they did a great job. They are a bit pricey, but they warranty their work for a year.
Regards, Rich
Regards, Rich