Quote:
Originally Posted by old_coot88
Could it be described more as a "hum" than a buzz? Since it remains the same irrespective of vol control setting, it would be 'downstream' (in the signal chain) from the vol control. Shorted output tube maybe(?). See if tapping the tube has any effect on it.
|
+1
Another possibility is some open or bad connection in the audio path between the volume control and the output tube (or a bad filter cap)..... If there's an open in the audio chain where there is some capacitive pick up of the sound but strong(er?) Capacitive pick up of hum from literally anything running 60Hz that could do it.