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Philco 46-1209 strange behavior
sq65
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Posts: 6
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Joined: Jun 2025
City: Nashville State, Province, Country: Tennessee
#11

Yesterday, 09:15 AM
Thank you for the detailed response MrFixr.

To clarify, the hum starts when the tubes are fully warmed up, and goes away after about 3-5 seconds. The hum is not affected by the volume control, and still happens when the 7X7 is removed. Also, I replaced all the filter caps with 450v.
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Messages In This Thread
Philco 46-1209 strange behavior - by sq65 - 06-03-2025, 12:18 PM
RE: Philco 46-1209 strange behavior - by morzh - 06-03-2025, 03:47 PM
RE: Philco 46-1209 strange behavior - by sq65 - 06-03-2025, 04:13 PM
RE: Philco 46-1209 strange behavior - by morzh - 06-03-2025, 07:42 PM
RE: Philco 46-1209 strange behavior - by sq65 - 06-03-2025, 07:55 PM
RE: Philco 46-1209 strange behavior - by sq65 - 06-04-2025, 09:45 AM
RE: Philco 46-1209 strange behavior - by morzh - 06-04-2025, 10:47 AM
RE: Philco 46-1209 strange behavior - by sq65 - 06-05-2025, 10:22 AM
RE: Philco 46-1209 strange behavior - by morzh - Yesterday, 08:47 AM
RE: Philco 46-1209 strange behavior - by sq65 - Yesterday, 09:15 AM



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