From: "Steven Rousseau" Date: Wed, 16 Jun 1999 18:44:01 -0400 Subject: Hum at idle
Hi George,
If the amp hums with the volume off then :
1/ Your output tubes are not matched 2/ Your power supply filter capacitors are defective 3/ Your 6 volt tube filament supply is not balanced. 4/ Other....
The easiest to check is the power tubes. Does your amp have 2 power tubes? If it only has one then you don't have to worry about matching output tubes. (-:
In either case, replace the pair (or single) power tube with a matched set (or single new tube).
If that does not fix the hum you might consider having the amp checked or sending it back.
