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Old 09-25-2010, 01:13 PM
j4570 j4570 is offline
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Join Date: Jun 2008
Posts: 21
Help with "micas" identification

These are in a Silvertone 4563 Radio. I'm pretty sure they are original as it was my grandfather's (and their first radio) and no one else worked on it except me I believe.

I restored it (well kinda) about 15 years ago before the internet was around for help. It works pretty well. Been having some hum and other problems lately. I suspect these mica's may not be real mica's

The parts lists has two micas

0.0005 mfd
0.00005 mfd

However, looking at them, I can't indentify these, been to a few websites, but not completely sure.

Pic 1:



Pic 2:



I tried converting the pictures with dots to the mfd (thats microfarad today, or uF, right) in the parts list and I can't get the values to work out.

I'm going to clean up that nasty solder joint while I'm at it too........

I might also replace the electrolytics I used before with under the chassis modern ones. I used some repair ones from Frontier 15 years ago, and I'm sure they are fine, I just don't like how I had to mount one outside the chassis.

Any help with the "micas" I'd appreciate. Info on the web says one is molded paper? The one with the brown dot.

Thanks,

Jason
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