I don’t understand why anyone would expect to get a 30 year old or more piece of equipment fixed. Would you try that with a 30 year old car? If you want to be able to get service almost forever, look into McIntosh. They are very reliable and the factory backs all old products when possible. I bought a 10 year old McIntosh integrated amp in 2017. As of today, I have never, ever encountered a problem with it. In 2017 I paid $3200.00 for it, today the asking price on the same unit is $5000.00.