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The dreaded "Silver Mica Disease"
Eric Adams
Phorum Expert
*****
Posts: 825
Threads: 113
Joined: Aug 2012
City: The Villages State, Province, Country: Florida
#1

01-15-2014, 10:40 AM
Hello everyone,
Well, I think I have it. I'm working on a Zenith 7H822 AM/FM radio. I've done the tubes, caps and resistors. When I first turn it on I get a crackling that sounds like lightning on AM only. After a few minutes it goes away. Does it sound like I have it?
If so, how do I determine which IF can has the bad one? I saw a thread on this phorum a while ago that shows how to replace them, but I guess I could just replace the can (I have some spares). I just need a way to locate the bad one.
Thanks.

http://www.nostalgiaair.org/Resources/309/M0025309.htm
Eric
The Villages, FL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org

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Messages In This Thread
The dreaded "Silver Mica Disease" - by Eric Adams - 01-15-2014, 10:40 AM
RE: The dreaded "Silver Mica Disease" - by jontz - 01-15-2014, 11:19 AM
RE: The dreaded "Silver Mica Disease" - by vinzer - 01-15-2014, 11:36 AM
RE: The dreaded "Silver Mica Disease" - by jontz - 01-15-2014, 11:41 AM
RE: The dreaded "Silver Mica Disease" - by morzh - 01-15-2014, 12:07 PM
RE: The dreaded "Silver Mica Disease" - by Arran - 01-16-2014, 02:05 AM
RE: The dreaded "Silver Mica Disease" - by jontz - 01-16-2014, 07:34 AM
RE: The dreaded "Silver Mica Disease" - by morzh - 01-16-2014, 11:24 AM



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  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)