[Boatanchors] Ranger Caps and Solid State Rectifiers

[Kim Herron]

Hi Larry,
	You'll find that the mica's are INDEED failing.  I find at least one
or two in every radio that I do. (several a week)  It's the same thing that
gets everything else.  Moisture.  If the seal around the leads fail, the cap
fails.  We've been seeing this in Hammarlund radios for many many years.
The caps that fail in the bottom of the IF cans are mica, and when they
fail, the circuit won't peak.  Just got done rebuilding an RCA 10K
shortwave/AM receiver and EVERY mica was BAD!  In some cases the leads fell
out of the caps when I touched them.

Kim Herron W8ZV 
kim.herron at sbcglobal.net
1-616-677-3706

-----Original Message-----
From: boatanchors-bounces at mailman.qth.net
[mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Al Parker
Sent: Monday, October 13, 2008 7:42 PM
To: BLIMPY; boatanchors at mailman.qth.net
Subject: Re: [Boatanchors] Ranger Caps and Solid State Rectifiers


Larry,
    This is NOT TRUE.  Micas are failing.  I've had several bad ones in 
R-388/75A's.  I'm not the only one that's found this problem.  I'm not 
talking about "micamolds" or "postage stamps".  Maybe Rangers are lucky?  Or

don't have any?
73,
Al, W8UT

----- Original Message ----- 
From: "BLIMPY" <blimpboy at sonic.net>
To: <boatanchors at mailman.qth.net>
Sent: Monday, October 13, 2008 6:46 PM
Subject: [Boatanchors] Ranger Caps and Solid State Rectifiers <snip>
>
>   Never mess with mica caps !
>
<snip> 


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