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Philco Model 81B
texan george
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Posts: 114
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City: Pensacola State, Province, Country: FL
#32

10-25-2022, 05:46 PM
Sorry to take so long to get back. I finally got the 460 signal at close to 460. No signal after that. The sensitivity is the regular nut. I have gone thru this thing so many times looking for where the problem is but can't seem to find it. Pulled the osc coil and rewound it looking at the pictures I took prior, however I couldn't tell where it hooked up due to the wires being so corroded. I have the feedback coil on the same terminals as the cap/resistor items 5 and 10. Pulled the ant coil and baked it at 200 degrees for 30 min. It seems to check out ok. When I started, I changed all the resistors. Still no signal after the 460 tests. Here are the present voltages:
77 Osc- plate 252, screen 95, control 0, suppressor 76. cathode 76
77 Det- plate 60, screen 36.4, control .8, suppressor 0, cathode 0
42 - plate 234, screen 252, control -16, cathode 0.

It has to be something I just don't see.
George
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Messages In This Thread
Philco Model 81B - by texan george - 09-25-2022, 03:36 PM
RE: Philco Model 81B - by Radioroslyn - 09-25-2022, 07:49 PM
RE: Philco Model 81B - by David - 09-25-2022, 08:14 PM
RE: Philco Model 81B - by texan george - 09-25-2022, 08:24 PM
RE: Philco Model 81B - by texan george - 09-30-2022, 04:51 PM
RE: Philco Model 81B - by Radioroslyn - 09-30-2022, 10:32 PM
RE: Philco Model 81B - by texan george - 10-01-2022, 05:16 PM
RE: Philco Model 81B - by MrFixr55 - 10-01-2022, 05:40 PM
RE: Philco Model 81B - by Radioroslyn - 10-02-2022, 08:18 AM
RE: Philco Model 81B - by texan george - 10-02-2022, 08:42 AM
RE: Philco Model 81B - by falcon123 - 10-02-2022, 09:49 AM
RE: Philco Model 81B - by texan george - 10-02-2022, 01:05 PM
RE: Philco Model 81B - by Radioroslyn - 10-02-2022, 02:36 PM
RE: Philco Model 81B - by texan george - 10-02-2022, 05:05 PM
RE: Philco Model 81B - by Radioroslyn - 10-02-2022, 06:13 PM
RE: Philco Model 81B - by texan george - 10-03-2022, 01:17 PM
RE: Philco Model 81B - by radiorich - 10-03-2022, 02:30 PM
RE: Philco Model 81B - by texan george - 10-04-2022, 05:09 PM
RE: Philco Model 81B - by MrFixr55 - 10-04-2022, 10:12 PM
RE: Philco Model 81B - by texan george - 10-05-2022, 07:27 AM
RE: Philco Model 81B - by texan george - 10-21-2022, 02:55 PM
RE: Philco Model 81B - by radiorich - 10-21-2022, 03:24 PM
RE: Philco Model 81B - by Radioroslyn - 10-21-2022, 04:34 PM
RE: Philco Model 81B - by texan george - 10-22-2022, 06:26 AM
RE: Philco Model 81B - by texan george - 10-22-2022, 06:28 AM
RE: Philco Model 81B - by texan george - 10-22-2022, 02:19 PM
RE: Philco Model 81B - by texan george - 10-22-2022, 03:52 PM
RE: Philco Model 81B - by Radioroslyn - 10-22-2022, 08:43 PM
RE: Philco Model 81B - by Radioroslyn - 10-22-2022, 08:50 PM
RE: Philco Model 81B - by texan george - 10-23-2022, 04:45 PM
RE: Philco Model 81B - by Radioroslyn - 10-23-2022, 09:22 PM
RE: Philco Model 81B - by texan george - 10-25-2022, 05:46 PM
RE: Philco Model 81B - by texan george - 11-04-2022, 11:25 AM
RE: Philco Model 81B - by Radioroslyn - 11-04-2022, 12:58 PM
RE: Philco Model 81B - by RodB - 11-05-2022, 09:18 AM
RE: Philco Model 81B - by radiorich - 11-05-2022, 11:49 AM
RE: Philco Model 81B - by texan george - 11-05-2022, 03:26 PM
RE: Philco Model 81B - by texan george - 11-08-2022, 12:48 PM
RE: Philco Model 81B - by radiorich - 11-09-2022, 02:00 PM
RE: Philco Model 81B - by texan george - 11-10-2022, 12:09 PM



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