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Starting on an RCA140

You may have to go the other way, Mike. Take a sample of the tar and determine what temperature the tar melts or at least gets soft. Hopefully not much above 212Deg F.

Heat till melting, with the can opening facing down. Drain as much tar as possible. With 2 pairs of "Channellock" pliers, grab the can toward the top and if possible, the core of the transformer through the opening at the bottom of the can, then work it out. If sufficient tar has been removed, at least you can splice the wires.

You likely know this but for the sake of others following the thread:

It appears that there are a lot of wires on this transformer. If the diagram is correct, the primary can be set for several voltages between 110(?) and 240(?) V. It appears that there are that there are 2 windings on the primary, each 120V, tapped for 110. In parallel, the transformer primary is set for 120. In series, 240. According to the diagram, each primary winding is 8 Ohm. The secondary is 200 Ohm. The Heater winding for all tubes except the rectifier is center tapped and should have the lowest resistance. The heater winding for the rectifier will also have a low resistance but is not the center tap.

Good luck.



The next lowest

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55


Messages In This Thread
Starting on an RCA140 - by morzh - 05-25-2026, 08:23 PM
RE: Starting on an RCA140 - by Arran - 05-25-2026, 10:04 PM
RE: Starting on an RCA140 - by morzh - 05-25-2026, 10:13 PM
RE: Starting on an RCA140 - by radiorich - 05-25-2026, 11:05 PM
RE: Starting on an RCA140 - by Arran - 05-26-2026, 01:06 AM
RE: Starting on an RCA140 - by morzh - 05-26-2026, 09:13 AM
RE: Starting on an RCA140 - by morzh - 05-27-2026, 09:25 PM
RE: Starting on an RCA140 - by morzh - 05-27-2026, 09:44 PM
RE: Starting on an RCA140 - by Arran - 05-28-2026, 02:40 PM
RE: Starting on an RCA140 - by morzh - 05-28-2026, 02:50 PM
RE: Starting on an RCA140 - by radiorich - 05-28-2026, 09:36 PM
RE: Starting on an RCA140 - by Arran - 05-28-2026, 09:58 PM
RE: Starting on an RCA140 - by Joe Rossi - 05-29-2026, 06:28 AM
RE: Starting on an RCA140 - by morzh - 05-29-2026, 08:08 AM
RE: Starting on an RCA140 - by Arran - 05-29-2026, 09:04 PM
RE: Starting on an RCA140 - by morzh - 05-29-2026, 09:08 PM
RE: Starting on an RCA140 - by Arran - 05-29-2026, 09:58 PM
RE: Starting on an RCA140 - by morzh - 05-29-2026, 10:15 PM
RE: Starting on an RCA140 - by radiorich - 05-29-2026, 11:09 PM
RE: Starting on an RCA140 - by morzh - 05-30-2026, 10:17 PM
RE: Starting on an RCA140 - by radiorich - 05-30-2026, 10:54 PM
RE: Starting on an RCA140 - by morzh - 05-30-2026, 11:06 PM
RE: Starting on an RCA140 - by Arran - 05-30-2026, 11:33 PM
RE: Starting on an RCA140 - by radiorich - 05-30-2026, 11:38 PM
RE: Starting on an RCA140 - by morzh - 05-31-2026, 09:35 PM
RE: Starting on an RCA140 - by radiorich - 05-31-2026, 10:53 PM
RE: Starting on an RCA140 - by Joe Rossi - 06-01-2026, 12:59 AM
RE: Starting on an RCA140 - by morzh - 06-01-2026, 08:03 AM
RE: Starting on an RCA140 - by radiorich - 06-01-2026, 09:37 AM
RE: Starting on an RCA140 - by morzh - 06-01-2026, 10:20 AM
RE: Starting on an RCA140 - by Arran - 06-01-2026, 04:25 PM
RE: Starting on an RCA140 - by morzh - 06-01-2026, 04:30 PM
RE: Starting on an RCA140 - by radiorich - 06-01-2026, 09:38 PM
RE: Starting on an RCA140 - by morzh - 06-01-2026, 10:08 PM
RE: Starting on an RCA140 - by radiorich - 06-01-2026, 10:20 PM
RE: Starting on an RCA140 - by RodB - 06-01-2026, 10:28 PM
RE: Starting on an RCA140 - by morzh - 06-01-2026, 10:53 PM
RE: Starting on an RCA140 - by Arran - 06-01-2026, 11:25 PM
RE: Starting on an RCA140 - by radiorich - 06-02-2026, 12:01 AM
RE: Starting on an RCA140 - by morzh - 06-02-2026, 08:29 AM
RE: Starting on an RCA140 - by morzh - 06-03-2026, 08:46 PM
RE: Starting on an RCA140 - by radiorich - 06-04-2026, 12:46 AM
RE: Starting on an RCA140 - by morzh - 06-04-2026, 07:35 AM
RE: Starting on an RCA140 - by Arran - 06-05-2026, 12:43 AM
RE: Starting on an RCA140 - by radiorich - 06-05-2026, 12:53 AM
RE: Starting on an RCA140 - by morzh - 06-05-2026, 07:49 AM
RE: Starting on an RCA140 - by morzh - 06-05-2026, 08:51 PM
RE: Starting on an RCA140 - by radiorich - 06-05-2026, 10:25 PM
RE: Starting on an RCA140 - by morzh - 06-05-2026, 10:34 PM
RE: Starting on an RCA140 - by Joe Rossi - 06-06-2026, 05:06 AM
RE: Starting on an RCA140 - by morzh - 06-06-2026, 11:48 AM
RE: Starting on an RCA140 - by Arran - 06-06-2026, 12:53 PM
RE: Starting on an RCA140 - by RodB - 06-06-2026, 01:22 PM
RE: Starting on an RCA140 - by morzh - 06-06-2026, 02:45 PM
RE: Starting on an RCA140 - by morzh - 06-06-2026, 09:02 PM
RE: Starting on an RCA140 - by Arran - 06-06-2026, 10:43 PM
RE: Starting on an RCA140 - by radiorich - 06-07-2026, 12:25 AM
RE: Starting on an RCA140 - by Joe Rossi - 06-07-2026, 05:45 AM
RE: Starting on an RCA140 - by KCMike - 06-07-2026, 07:53 AM
RE: Starting on an RCA140 - by Steve D - 06-07-2026, 11:45 AM
RE: Starting on an RCA140 - by morzh - 06-07-2026, 12:02 PM
RE: Starting on an RCA140 - by morzh - 06-07-2026, 09:27 PM
RE: Starting on an RCA140 - by radiorich - 06-07-2026, 09:43 PM
RE: Starting on an RCA140 - by morzh - 06-07-2026, 10:00 PM
RE: Starting on an RCA140 - by radiorich - 06-07-2026, 10:22 PM
RE: Starting on an RCA140 - by morzh - 06-08-2026, 08:07 AM
RE: Starting on an RCA140 - by radiorich - 06-08-2026, 08:36 AM
RE: Starting on an RCA140 - by morzh - 06-12-2026, 08:17 PM
RE: Starting on an RCA140 - by radiorich - 06-12-2026, 10:53 PM
RE: Starting on an RCA140 - by morzh - 06-13-2026, 10:21 AM
RE: Starting on an RCA140 - by Joe Rossi - 06-13-2026, 07:43 PM
RE: Starting on an RCA140 - by morzh - 06-13-2026, 10:17 PM
RE: Starting on an RCA140 - by radiorich - 06-13-2026, 11:50 PM
RE: Starting on an RCA140 - by morzh - 06-14-2026, 05:22 PM
RE: Starting on an RCA140 - by KCMike - 06-14-2026, 06:23 PM
RE: Starting on an RCA140 - by morzh - 06-14-2026, 06:46 PM
RE: Starting on an RCA140 - by Arran - 06-15-2026, 03:32 AM
RE: Starting on an RCA140 - by morzh - 06-15-2026, 08:34 AM
RE: Starting on an RCA140 - by morzh - 06-15-2026, 10:53 PM
RE: Starting on an RCA140 - by radiorich - 06-16-2026, 01:33 AM
RE: Starting on an RCA140 - by morzh - 06-16-2026, 08:00 AM
RE: Starting on an RCA140 - by Arran - 06-16-2026, 08:31 PM
RE: Starting on an RCA140 - by morzh - 06-16-2026, 08:41 PM
RE: Starting on an RCA140 - by radiorich - 06-16-2026, 09:28 PM
RE: Starting on an RCA140 - by radiorich - 06-16-2026, 09:29 PM
RE: Starting on an RCA140 - by Arran - 06-17-2026, 01:59 PM
RE: Starting on an RCA140 - by morzh - 07-12-2026, 07:49 PM
RE: Starting on an RCA140 - by morzh - 07-12-2026, 08:41 PM
RE: Starting on an RCA140 - by radiorich - 07-13-2026, 02:07 PM
RE: Starting on an RCA140 - by morzh - 07-13-2026, 03:42 PM
RE: Starting on an RCA140 - by morzh - 07-13-2026, 09:27 PM
RE: Starting on an RCA140 - by radiorich - 07-13-2026, 10:59 PM
RE: Starting on an RCA140 - by radiorich - 07-13-2026, 11:02 PM
RE: Starting on an RCA140 - by Arran - 07-14-2026, 02:48 AM
RE: Starting on an RCA140 - by morzh - 07-14-2026, 09:13 AM
RE: Starting on an RCA140 - by Arran - 07-14-2026, 12:27 PM
RE: Starting on an RCA140 - by morzh - 07-14-2026, 01:55 PM
RE: Starting on an RCA140 - by Arran - 07-14-2026, 02:33 PM
RE: Starting on an RCA140 - by morzh - 07-14-2026, 10:44 PM
RE: Starting on an RCA140 - by morzh - 07-16-2026, 09:02 PM
RE: Starting on an RCA140 - by KCMike - 07-17-2026, 09:08 AM
RE: Starting on an RCA140 - by morzh - 07-17-2026, 09:45 AM
RE: Starting on an RCA140 - by morzh - 07-17-2026, 09:20 PM
RE: Starting on an RCA140 - by morzh - 07-18-2026, 08:33 PM
RE: Starting on an RCA140 - by Arran - 07-19-2026, 02:01 AM
RE: Starting on an RCA140 - by MrFixr55 - 07-19-2026, 10:19 AM
RE: Starting on an RCA140 - by morzh - 07-19-2026, 10:32 AM
RE: Starting on an RCA140 - by RodB - 07-19-2026, 11:05 AM
RE: Starting on an RCA140 - by morzh - 07-19-2026, 02:12 PM
RE: Starting on an RCA140 - by Arran - 07-19-2026, 04:41 PM
RE: Starting on an RCA140 - by morzh - 07-19-2026, 04:43 PM
RE: Starting on an RCA140 - by morzh - 07-19-2026, 04:54 PM
RE: Starting on an RCA140 - by morzh - 07-20-2026, 08:34 PM
RE: Starting on an RCA140 - by MrFixr55 - 07-20-2026, 11:07 PM
RE: Starting on an RCA140 - by morzh - 07-21-2026, 08:24 AM
RE: Starting on an RCA140 - by morzh - 07-21-2026, 12:00 PM
RE: Starting on an RCA140 - by Arran - 07-21-2026, 01:07 PM
RE: Starting on an RCA140 - by morzh - 07-21-2026, 01:55 PM
RE: Starting on an RCA140 - by Arran - 07-21-2026, 07:37 PM
RE: Starting on an RCA140 - by morzh - 07-21-2026, 10:01 PM
RE: Starting on an RCA140 - by morzh - 07-26-2026, 10:18 PM
RE: Starting on an RCA140 - by MrFixr55 - 07-27-2026, 08:50 AM
RE: Starting on an RCA140 - by morzh - 08-15-2026, 04:52 PM
RE: Starting on an RCA140 - by Joe Rossi - 08-15-2026, 09:08 PM
RE: Starting on an RCA140 - by David - 08-16-2026, 01:16 PM
RE: Starting on an RCA140 - by morzh - 08-16-2026, 02:28 PM
RE: Starting on an RCA140 - by David - 08-16-2026, 03:07 PM
RE: Starting on an RCA140 - by Joe Rossi - 08-16-2026, 03:42 PM
RE: Starting on an RCA140 - by morzh - 08-16-2026, 04:15 PM
RE: Starting on an RCA140 - by MrFixr55 - 08-16-2026, 07:21 PM



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