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reliability of mica caps
jslim22
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Joined: Jun 2006
#1

06-27-2006, 10:44 PM
I am getting varying opinions about replacing mica caps on 40-180. What is the concensus here?
Thanks Jun
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Terry Judkins
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Joined: Oct 2005
City: Atlanta GA
#2

06-27-2006, 11:19 PM
Referring to the Rider schematic, I would replace capacitors numbered 22, 23 and 24. The 370 pf caps usually have drifted and cause difficulty setting the pushbuttons and also may cause drift during warmup. The 250 pf cap was bad in a restoration that I did a while back. The oscillator was stopping intermittently.
Kind regards,
Terry
http://home.comcast.net/~suptjud/
"Life is simpler when you plow around the stump."
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jslim22
Junior Member
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Posts: 15
Threads: 6
Joined: Jun 2006
#3

06-30-2006, 10:52 PM
I decided to replace all the caps. Cost little over $13. Might as well.
Jun
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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration