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Philco 38-8 Speaker issue
#12

It appears you have a couple issues. One is the output transformer. Smoke doesn't always mean it's bad. You could measure the primary winding to see if it is not open. If it's open, I have been replacing these single-ended transformers with a Bogen T-72510. This one is a universal line transformer but should handle the output of your radio. I use either the blue or the black lead, whichever sounds better.

The issue with the "candohm" resistor is fairly simple to fix. It is a wirewound resistor with taps at the appropriate points. Before replacing it, make sure it needs to be replaced by measuring all the taps. Usually one or all the sections are open. My method is to pull the wire out of the metal case and use the terminals to mount new resistors. Use 10 watt resistors closest to the correct resistance in the schematic. You can also mount them on a terminal strip and move the wiring from the candohm to the terminal strip.


Messages In This Thread
Philco 38-8 Speaker issue - by Mr. Radio-Man - 08-26-2026, 10:46 PM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 08-27-2026, 10:21 AM
RE: Philco 38-8 Speaker issue - by RodB - 08-27-2026, 11:21 AM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 08-27-2026, 12:51 PM
RE: Philco 38-8 Speaker issue - by MrFixr55 - 08-27-2026, 02:12 PM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 08-27-2026, 03:05 PM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 08-27-2026, 04:10 PM
RE: Philco 38-8 Speaker issue - by Arran - 08-28-2026, 01:48 AM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 08-28-2026, 09:52 PM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 08-28-2026, 11:20 PM
RE: Philco 38-8 Speaker issue - by DaleHCook - 08-29-2026, 07:24 AM
RE: Philco 38-8 Speaker issue - by RodB - 08-29-2026, 12:46 PM
RE: Philco 38-8 Speaker issue - by DaleHCook - 08-29-2026, 02:44 PM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 09-02-2026, 11:16 PM
RE: Philco 38-8 Speaker issue - by MrFixr55 - 09-03-2026, 07:31 AM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 09-04-2026, 07:44 PM
RE: Philco 38-8 Speaker issue - by MrFixr55 - 09-04-2026, 08:26 PM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 09-21-2026, 09:53 PM
RE: Philco 38-8 Speaker issue - by Mr. Radio-Man - 09-26-2026, 09:04 PM



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