[R-390] Capehart update

[Bernice & Al]

----- Original Message ----- 
From: "Ronnie Davis" <rdavis24@carolina.rr.com>
To: <r-390@mailman.qth.net>
Sent: Friday, December 12, 2003 5:03 PM
Subject: [R-390] Capehart update


> Hello again
> Just got back in the house after pulling the AF deck out and recapping it
> with one of Walter Wilson's kits. Was not quite as bad as I thought it
would
> be. The radio is working again, but still needs alot more attention. I
still
> have to rebuild the filter caps C603 and C606, both have corrosion leaking
> out. I have the caps to do it, but I am a little hesitate about jumping on
> that job. Does anyone have any hints on the job? I

Ronnie,

I went through the same about 3 years ago. Continue working with Walter
Wilson. See his site at

http://r-390a.us/filter_capacitors.htm

I used the same technique for my Bluestriper. End result was very good. Used
the same method on my
SP-600 also. After cutting open the cans I screwed in the lag screw then
heated them in boiling water. The innards came out very easy. A coating of
tar about 1/16 inch remained. To remove the tar I put them in the freezer.
The tar chipped out easily when frozen. Any remaining tar was cleaned using
mineral spirits as Walter indicates.

I drilled and tapped for 2-56 screw. This leaves a bit more wall thickness
in the aluminium stud than the 4-40 screw that Walter uses. In my capacitors
I used 2-56 stainless steel screws to mount a solder lug. The new cap leads
were soldered to the solder lug. I thank Walter for compiling and providing
all the information on rebuilding electrolytics.

Good luck.

Al