Pre Amp Repair

My Advent Model 300's left channel cuts out after a few minutes of play. Bad cap is my guess. Who in the NY area can still do simple electronic repairs-especially with regard 70s vintage audio products?
Stereo Exchange has a really good service department. They can fix just about anything.
Unless you're in love with the Advent, consider putting the money into a more recent something listed here. Solid state audio has come a long way.
Check out He is not in NY, but he is a big specialist with the Advent 300 receiver.