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Philco 38-4 question
emcjim
Junior Member
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Posts: 9
Threads: 3
Joined: Apr 2018
City: Kenosha, WI
#1

12-30-2018, 11:46 AM
Hello,
    working on a 38-4 chassis and there is a resistor connected to C25 that is not listed on the component diagram ( I have attached that as well as a picture of the chassis). It looks pretty burnt and I want to replace it but want to be sure of the value. After looking at the schematic I am thinking that it is listed on the parts list as 27X, 1000 ohm 1/2 watt resistor, where on the 38-5 would be the shadow meter instead. Can anyone let me know what this is? Thanks.
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Radioroslyn
Phorum Expert
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Posts: 7,286
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
#2

12-30-2018, 02:08 PM
Yes it looks to be the 1K resistor via the diagram. It supplies the plate voltage to the rf amp and mixer tubes. More than likely #10 or 25 was leaky and caused excessive current flow thru the resistor.

GL
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
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emcjim
Junior Member
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Posts: 9
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Joined: Apr 2018
City: Kenosha, WI
#3

12-31-2018, 10:44 AM
Thank you for the info, much appreciated
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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration