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Intermittant hum
Phlogiston
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#4

11-01-2018, 01:52 PM
An "open" in either the volume or tone control can induce hum. In most cases this is caused by wear of the conductive strip and/or isolation of the wiper (contact). this is unfortunately rather common in late 30's Philco's and can be worsened by attempted cleaning of the control.

Yes, the volume can be affected.
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(This post was last modified: 11-01-2018, 01:53 PM by Phlogiston.)
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Messages In This Thread
Intermittant hum - by lasurveyor - 10-31-2018, 11:45 PM
RE: Intermittant hum - by morzh - 11-01-2018, 08:03 AM
RE: Intermittant hum - by lasurveyor - 11-01-2018, 11:44 AM
RE: Intermittant hum - by Phlogiston - 11-01-2018, 01:52 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration