Philco 21 repair

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Philco 21 repair

Simon Wa3uay
Senior Member

Posts: 337
Threads: 13
Joined: Apr 2019
City: Greenwood State, Province, Country: Delaware

06-21-2019, 09:44 AM

Chas, The power transformer is alive! Powered up slowly to 110v, and all the tubes (no 80, of course) heated up. Left it sit for 1/2 hr, and Pt is still cold. The '45' tubes are an odd couple; the 'Wizard' got a lot hotter than the Radiotron...

Coils- rechecked, All 3 (grid to ground) measure 4 ohms.
Primary (2) 20 ohms, (7) 11 ohms, (10) 11 ohms.

Pilot Light doesn't work. The bulb shows continuity, so maybe dirty connection or something....I don't see it on schematic.

Volume Control (5K ohms to coil) needs attention (no WD-40!), if no luck then Marc Oppat.

Resistors- there's only 5, so make my own? maybe!

-Simon

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Messages In This Thread

Philco 21 repair - by Simon Wa3uay - 06-19-2019, 04:28 PM

RE: Philco 21 repair - by Simon Wa3uay - 06-19-2019, 04:31 PM

RE: Philco 21 repair - by Chas - 06-19-2019, 09:17 PM

RE: Philco 21 repair - by Radioroslyn - 06-20-2019, 10:22 AM

RE: Philco 21 repair - by Steve Davis - 06-20-2019, 11:38 AM

RE: Philco 21 repair - by Radioroslyn - 06-20-2019, 11:50 AM

RE: Philco 21 repair - by Simon Wa3uay - 06-21-2019, 09:44 AM

RE: Philco 21 repair - by Simon Wa3uay - 06-24-2019, 09:19 AM

RE: Philco 21 repair - by Simon Wa3uay - 07-22-2019, 04:12 PM

RE: Philco 21 repair - by Chas - 07-22-2019, 07:06 PM

RE: Philco 21 repair - by Radioroslyn - 07-22-2019, 08:07 PM

RE: Philco 21 repair - by Chas - 07-22-2019, 11:41 PM

RE: Philco 21 repair - by Simon Wa3uay - 07-23-2019, 11:26 AM

RE: Philco 21 repair - by Simon Wa3uay - 09-10-2019, 04:06 PM

RE: Philco 21 repair - by bensharp27 - 09-10-2019, 08:43 PM

RE: Philco 21 repair - by Simon Wa3uay - 09-11-2019, 10:39 AM

RE: Philco 21 repair - by morzh - 09-11-2019, 12:32 PM

RE: Philco 21 repair - by Simon Wa3uay - 09-11-2019, 01:02 PM

RE: Philco 21 repair - by rfeenstra - 09-11-2019, 01:53 PM

RE: Philco 21 repair - by morzh - 09-11-2019, 02:09 PM

RE: Philco 21 repair - by Steve Davis - 09-11-2019, 10:08 PM

RE: Philco 21 repair - by Simon Wa3uay - 09-12-2019, 01:31 PM

RE: Philco 21 repair - by Simon Wa3uay - 09-19-2019, 09:54 AM

RE: Philco 21 repair - by morzh - 09-19-2019, 11:32 AM

RE: Philco 21 repair - by Simon Wa3uay - 09-19-2019, 12:46 PM

RE: Philco 21 repair - by Steve Davis - 09-19-2019, 01:11 PM

RE: Philco 21 repair - by rfeenstra - 09-19-2019, 01:42 PM

RE: Philco 21 repair - by morzh - 09-19-2019, 01:52 PM

RE: Philco 21 repair - by Radioroslyn - 09-19-2019, 05:09 PM

RE: Philco 21 repair - by rfeenstra - 09-19-2019, 05:47 PM

RE: Philco 21 repair - by Simon Wa3uay - 09-20-2019, 08:44 AM

RE: Philco 21 repair - by morzh - 09-20-2019, 01:17 PM

RE: Philco 21 repair - by Simon Wa3uay - 09-23-2019, 11:39 AM

RE: Philco 21 repair - by Radioroslyn - 09-23-2019, 12:07 PM

RE: Philco 21 repair - by Simon Wa3uay - 09-25-2019, 07:58 PM

RE: Philco 21 repair - by Simon Wa3uay - 10-10-2019, 11:36 AM

RE: Philco 21 repair - by morzh - 10-10-2019, 12:10 PM

RE: Philco 21 repair - by Simon Wa3uay - 10-10-2019, 07:05 PM

RE: Philco 21 repair - by morzh - 10-11-2019, 09:07 AM

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