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UPDATE: Tubes tested. Canadian Philco Radio: ID and repair needed
Radioroslyn
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#25

04-29-2015, 10:18 PM
You can touch the grid cap on the 1H5 (grid cap is the connection on the top of the tube). That will inject a 60 cycle hum in the audio amp. If working will buzz loud. Replace the 680 ohm resistor it's part of the grid bias network for the output stage.
Terry
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RE: UPDATE: Tubes tested. Canadian Philco Radio: ID and repair needed - by Radioroslyn - 04-29-2015, 10:18 PM



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