In Reply to: Depends on the hum frequency posted by Ray Moth on April 20, 2007 at 14:36:10:
Make sure your heater circuit is referenced to ground (or another voltage of choice) and not floating.Make sure you have no dry or cold solder joints, and that the tube pins are clean and making good contact with the socket. A shaky connection anywhere in the audio or PS circuits can result in hum, dunno why.
Aloha,
Poinz
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Follow Ups
- A couple more suggestions. - Poindexter 15:24:31 04/20/07 (0)