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model 20 hum (detector circuit?)
Steve Davis
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#4

10-19-2015, 06:03 PM
Chris, the only reason I mentioned the 27 tube was because of the he had a 3.1 volt reading on the cathode which is connected to chassis ground, which led me to believe the riveted ground lug had a bad connection.

Steve 
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Messages In This Thread
model 20 hum (detector circuit?) - by Tubesforme - 10-19-2015, 12:11 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-19-2015, 05:23 PM
RE: model 20 hum (detector circuit?) - by Steve Davis - 10-19-2015, 06:03 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-20-2015, 09:01 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-25-2015, 09:57 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-25-2015, 10:39 AM
RE: model 20 hum (detector circuit?) - by morzh - 10-25-2015, 10:08 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-26-2015, 09:18 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-26-2015, 09:34 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-26-2015, 10:24 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-27-2015, 07:43 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-28-2015, 10:52 AM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-28-2015, 02:36 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-30-2015, 05:13 PM
RE: model 20 hum (detector circuit?) - by OZ4 - 10-31-2015, 09:40 AM
RE: Low continual hum in model 21 - by Tubesforme - 10-23-2015, 10:19 PM



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