I have a Levinson ML-3.....even older than your 20.5's.
Same situation, it has never been in need of service, these days, it's a backup amp that I light up and run once a month to keep the caps exercised.
Me, I'm gonna leave it alone. There's an old saying: "If it works, don't fix it".
Best,
Paul :-)
Same situation, it has never been in need of service, these days, it's a backup amp that I light up and run once a month to keep the caps exercised.
Me, I'm gonna leave it alone. There's an old saying: "If it works, don't fix it".
Best,
Paul :-)