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[AMPS] Re:SB-220 waffer switch

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Subject: [AMPS] Re:SB-220 waffer switch
From: (Lee Buller)
Date: Fri, 21 Feb 1997 08:26:30 -0600
At 04:59 AM 2/21/97 -0500, you wrote:
>>From  Fri Feb 21 04:59:04 1997

>Donald P. Butler wrote:
>> I cooked a couple fingers on the rotary wafer switch in one of my
>> SB220s last weekend during the contest.
>> I checked with Al, WA4DRU, who sells Heath amp parts and upgrade
>> kits.....he no longer has them available
>> Does anyone know of a possible source for a replacement? ..or
>> suggestions for repairing the bad switch?
>> Hopeful??
>> Don, N5LZ
>Hi Don,
>When I acquired an SB-220 a few years ago, it has several burned 
>contacts.  After looking unsuccessfully for a replacement at a reasonable 
>cost, I went the repair route.
>At a hamfest, I found some switches with nice gold plated contacts for 
>about a dollar per switch.  I drilled out the rivits holding the 
>contacts, and fitted them to the damaged switch (I replaced them in 
>pairs--one on each side of the wafer).  To hold the new contacts in 
>place, I cut a piece of thick copper wire, and inserted it through the 
>rivit holes and through the switch wafer.  I then soldered the contacts 
>into place against the shaft of the copper wire.
>Obviously, this is delecate work; but if you're so inclined, you can make 
>the switch as good as new.
>Good luck,
>Dan - W4TQ

HI everyone...

I did the same thing once, but used small nuts and bolts to hold the
contacts in place.  Where did I get something that small?  An optometry
shop.  They are used to repair glasses.


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