[R-390] Filter cap temperature

[Cecil Acuff]

I think a rebuild is a standard thing with the "A".  I have several in the 
shop and everyone I have checked had excessive leakage.

I would do the rebuild.  There are several ways to go...caps under the 
chassis, caps in octal socketed square relay housings or the traditional cap 
overhaul where you cut the things open and replace the guts.  I am about 
half way through that process with a pair of mine but have had to put it on 
the back burner for a few weeks while I finish another project up!

Cecil...
----- Original Message ----- 
From: "Barry" <n4buq at aol.com>
To: "R-390 HF Receiver List" <r-390 at mailman.qth.net>
Sent: Friday, May 06, 2005 8:36 AM
Subject: [R-390] Filter cap temperature


> While tinkering with the "new" R390A last night, I noticed that C603 is
> getting slightly warm.  The other cap is cold.  Is this possible an
> indication of low ESR?  Do these old caps generally leak a bit or should I
> be concerned?  I hadn't planned on replacing them as they seem to be
> working, but if they're going to blow, then I'd rather go ahead and
> replace/rebuild them.
>
> Thanks,
>
> Barry - N4BUQ
>
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