[R-390] Re: R-390 Digest, Vol 13, Issue 17

[Al Parker]

Hi Guys,
    I'll second Cecil on can opening heat & minimal ukumpucky.  I've done
the process on SP-600, R-388, and other smaller caps, it's relatively
easy.  I haven't done an R-390A yet, but it's closeby and oughta be abt
the same.  It's not hard to do, and whatever your "male vs female" view on
radios is, why not keep it right if it's easy or not costly.
      I've been taking pix and will, one of these days when I get a round
tuit, post all the info on a webpage for all to learn from.  For a
preview, I've had a small one for a Drake rcvr avaliable for viewing for a
yr or 2 at:
http://www.thecompendium.net/radio/filtercap.htm
    I've been toying with the idea of offering the service for hire.
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.thecompendium.net/radio/
http://www.hammarlund.info


> Date: Fri, 6 May 2005 11:56:45 -0500
> From: "Cecil Acuff" <chacuff at cableone.net>
> Subject: Re: [R-390] Filter cap temperature
>
> Just a comment on the black goo.  Maybe I got lucky but I did no digging
at
> all.  I did find if you pull on them before they are heated enough on
the
> outside you will leave a bunch of the stuff up in there to have to get
out.
> I took a propane torch and heated the shell while the base was locked in
a
> soft jawed vice.  Once it started smoking a bit from inside I grabbed
the
> outer shell with something that kept me from getting burnt but allowed
> decent grip and snatched the thing off.  All I was left with was a thin
film
> of the goo in the inside of the shell.  I wiped it out with a piece of
cloth
> wet with flux remover or lacquer thinner.  Worked great.  I rushed the
next
> one and ended up with the top half of the goo to get out.  More heat and
a
> screwdriver and it popped right out.  It's not too hard.  It just
requires
> more heat than most expect!  A heat shrink gun didn't get it!
>
> 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 9:56 AM
> Subject: Re: [R-390] Filter cap temperature
>
>
> >I did "caps in an octal socket" for my Motorola.  It works nicely, but
I
> > don't really see that much advantage to having them "plug-n-play".
I'm
> > thinking of doing what I saw someone else do.  Using axial-lead caps,
run
> > the positive lead through the appropriate hole in the socket and
solder
> > underneath.  Gather the negative leads together, solder them to a
ground
> > lug
> > and attach the ground lug to the standoff where the original cap clamp
> > attached.  I thought that was a pretty neat solution.  Digging out
> > ukkumpucky gets old.
> >
> > Barry - N4BUQ