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model 20 hum (detector circuit?)
Tubesforme
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#7

10-23-2015, 10:19 PM
(10-23-2015, 09:34 PM)Steve Davis Wrote:  The voltages on the detector may read high because you are using a high impedance meter. Try narrowing it down by pulling tubes to see if the hum goes away. Start with the 24 then the 27.

Steve

Steve it will leave when the audio tube (27) is pulled, but nothing changes when the 24 is pulled.
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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 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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