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Starting on an RCA140
#20

Today recap.

Plus the resistor board service. Or a resistor board. there ar e two. This is the one right over the IF cans, at the back wall of the chassis.

   

The 1M resistors being 1.2M, I am OK with it.
400 Ohm cathode resistor being 560 Ohm and 60k being 86K...I am not Ok with it. Since that much drift occurred over 90 years, I simply paralleled the resistors to bring it under compliance. Was not easy. Cut some wires, inverted the board.
Then the caps. The caps are thin-shelled and the wax is actually tar.
The second cap was 2,400 uuF, and upon checking it was 2,600 uuF so I was tempted to leave it in. But then I desoldered the second lead (those were two foil strips) and the value rose to 4,200 uuF, so I ended up not breaking my own rules. This cap was literally one layer of paper wrapped around the tarred innards, plus it is a mishapen flat type, not the tubular.

   

I was able to gut it.
And then I had to fold the filler paper strip (the one I put between the hot glue and the cap) instead of simply rolling it. Like so.

   

The result is this.

   
   

In citu

   


Also checked the RF antenna/osc coils (those in the shielded box), I think it's 12. All are good.

Well, that's a start.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.


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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