Philco 40-165

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Philco 40-165

Radioroslyn
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Posts: 7,285
Threads: 268
Joined: Dec 2009
City: Roslyn Pa

#19

07-26-2017, 07:26 PM

For now I'd leave it. What it does is set the - bias voltage for the 41 and 7C6. THe important part is when you get it working measure the - voltage on pin 4 of the 41. RCA sez you need about -15vdc there. If you lower the resistance you will low the amount of bias voltage. If you do change it you'll need a 3-5watt job to replace it.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry

(This post was last modified: 07-26-2017, 07:28 PM by Radioroslyn.)

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Philco 40-165 - by jmcgill - 06-02-2017, 08:10 PM

RE: Philco 40-165 - by Radioroslyn - 06-03-2017, 04:42 AM

RE: Philco 40-165 - by jmcgill - 06-04-2017, 05:13 PM

RE: Philco 40-165 - by Radioroslyn - 06-05-2017, 10:45 AM

RE: Philco 40-165 - by jmcgill - 06-05-2017, 01:42 PM

RE: Philco 40-165 - by morzh - 06-05-2017, 02:04 PM

RE: Philco 40-165 - by Radioroslyn - 06-05-2017, 04:05 PM

RE: Philco 40-165 - by jmcgill - 06-06-2017, 01:40 PM

RE: Philco 40-165 - by Radioroslyn - 06-06-2017, 04:12 PM

RE: Philco 40-165 - by jmcgill - 06-07-2017, 09:46 AM

RE: Philco 40-165 - by morzh - 06-07-2017, 10:42 AM

RE: Philco 40-165 - by Radioroslyn - 06-07-2017, 01:22 PM

RE: Philco 40-165 - by Ron Ramirez - 06-11-2017, 11:00 AM

RE: Philco 40-165 - by Radioroslyn - 06-11-2017, 11:14 AM

RE: Philco 40-165 - by jmcgill - 06-11-2017, 03:20 PM

RE: Philco 40-165 - by Radioroslyn - 06-11-2017, 04:03 PM

RE: Philco 40-165 - by jmcgill - 07-26-2017, 06:46 PM

RE: Philco 40-165 - by Radioroslyn - 07-26-2017, 07:26 PM

40-165 - by jmcgill - 06-11-2017, 09:45 AM

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