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Model 37-116X Project
Chris h
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Posts: 79
Threads: 8
Joined: Dec 2014
City: Wood River, Il.
#20

11-27-2016, 01:49 PM
Well, things have been going well when, while going thru the alignment, one of the filter chokes opened up. It is Philco part number 32-7491. It is shown on the schematic as having a DC resistance of 400 ohms. I can't find what the impedance or current rating is supposed to be. Does anyone have any information for a suitable replacement?

I am not really sure why it opened up all of a sudden, as the radio has been playing very well for weeks. This choke does supply the B+ for the IF stages and the discriminator circuits. Is there anything that I may have done in the alignment process which could have caused the choke to open up? I can't think of anything. Nothing appeared abnormal, no mistaken shorts. (I was using an insulated tuning stick.) Maybe the choke was just on its last legs to begin with.
Chris H
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Messages In This Thread
Model 37-116X Project - by Chris h - 10-23-2016, 08:54 PM
RE: Model 37-116X Project - by morzh - 10-23-2016, 09:30 PM
RE: Model 37-116X Project - by Radioroslyn - 10-23-2016, 09:38 PM
RE: Model 37-116X Project - by Chris h - 10-24-2016, 08:19 AM
RE: Model 37-116X Project - by Chris h - 10-24-2016, 10:17 PM
RE: Model 37-116X Project - by k9uw - 10-31-2016, 10:40 PM
RE: Model 37-116X Project - by Chris h - 11-01-2016, 08:31 AM
RE: Model 37-116X Project - by Chris h - 11-08-2016, 09:23 AM
RE: Model 37-116X Project - by klondike98 - 11-08-2016, 09:25 AM
RE: Model 37-116X Project - by Chris h - 11-08-2016, 02:25 PM
RE: Model 37-116X Project - by 462ron - 11-08-2016, 05:09 PM
RE: Model 37-116X Project - by Chris h - 11-09-2016, 09:05 AM
RE: Model 37-116X Project - by 462ron - 11-09-2016, 03:48 PM
RE: Model 37-116X Project - by Chris h - 11-15-2016, 09:19 AM
RE: Model 37-116X Project - by Radioroslyn - 11-15-2016, 01:05 PM
RE: Model 37-116X Project - by Chris h - 11-15-2016, 06:13 PM
RE: Model 37-116X Project - by Ron Ramirez - 11-15-2016, 07:51 PM
RE: Model 37-116X Project - by Chris h - 11-16-2016, 08:52 AM
RE: Model 37-116X Project - by Chris h - 11-27-2016, 01:49 PM
RE: Model 37-116X Project - by morzh - 11-27-2016, 03:29 PM
RE: Model 37-116X Project - by Nathan Slingerland - 11-27-2016, 04:14 PM
RE: Model 37-116X Project - by morzh - 11-27-2016, 04:35 PM
RE: Model 37-116X Project - by Chris h - 11-27-2016, 06:21 PM
RE: Model 37-116X Project - by morzh - 11-27-2016, 06:27 PM
RE: Model 37-116X Project - by Chris h - 12-05-2016, 02:36 PM
RE: Model 37-116X Project - by Nathan Slingerland - 12-05-2016, 02:50 PM
RE: Model 37-116X Project - by Chris h - 12-05-2016, 09:52 PM
RE: Model 37-116X Project - by Nathan Slingerland - 12-06-2016, 01:33 PM
RE: Model 37-116X Project - by Chris h - 12-06-2016, 02:10 PM
RE: Model 37-116X Project - by Chris h - 06-26-2017, 10:07 PM
RE: Model 37-116X Project - by KCMike - 06-26-2017, 10:25 PM



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