[R-390] Rebuilding C551 - BTDT?

[Barry]

I finally got around to pulling C551 out of the IF deck.  I don't have a 
torch (yet) but was wondering about something.  The insulators for the 
connections are a somewhat soft rubbery material and it appears the entire 
can has to get pretty hot to melt that solder seal.

Is it possible to head the outside of the can enough to melt the solder 
without damaging those rubbery insulators?  I assume one has to be careful 
to direct the flame away from them, right?

Thanks,

Barry - N4BUQ

----- Original Message ----- 
From: "Renée Deeter_k6fsb" <rjdeeter_k6fsb at sbcglobal.net>
To: <n4buq at knology.net>; <R-390 at mailman.qth.net>
Sent: Tuesday, October 17, 2006 11:41 AM
Subject: Re: [R-390] Rebuilding C551 - BTDT?


> I've done quite a few-
>
> To rebuild C551 first remove it. Next drill a small hole (#60 or smaller) 
> in the bottom to allow the vapor to escape while unsoldering the bottom. 
> (Please think SAFETY FIRST). A small torch was used to melt the solder in 
> removal of the bottom and cleaning it up. Do this upside down (terminals 
> up) to keep the PCB oil in the can. There is not much oil about a 
> teaspoon, just enough to make a big mess! Remove and dispose of the 
> innards properly. Then solder the new capacitor ie.
> mylar 1.5 uf or 2.2 uf ,your choice of value(s), to the terminals, 
> assemble and tack solder the bottom back on. reinstall......
> easy....
> Renée, K6FSB
>
>
>
>
> n4buq at knology.net wrote:
>> Has anyone rebuilt C551 (the 2uF AGC cap on the IF deck)?  Is it very 
>> difficult?  I'd like to rebuild it as opposed to just putting a 
>> replacement under the deck, but if it's really a pain, then I may just go 
>> the easy route.
>>
>> Thanks,
>>
>> Barry - N4BUQ