Cleaning the wafer switches, etc. Best methods.

[Craig Roberts]

Robert Myers wrote:

I have an SB-401, and an SB-303.  Both need an especially good cleaning of the wafer switch contacts  --- 


DeOxit's excellent (with one reservation).  I use the "pen" applicator 
applied directly to the contacts wherever possible and a long syringe 
and needle in the more difficult to reach bowels of a radio. I employ 
the spray very rarely and then only on ceramic rotary switches and 
inside pots and toggle switches.

The reason for this tedious precision is that -- according to some 
reports -- DeOxit has been known to penetrate phenolic switch bodies 
with unpleasant results. This reportedly can cause swelling and 
subsequent damage to the often irreplaceable switch.  I am especially 
cautious with Heathkit and Hallicrafters ham gear and any older 
broadcast sets since the switch body materials are often poor in these 
radios. (This is not an indictment of Heath -- I used to work for them 
-- but I know "too much").

Good luck and have fun with your "Benton Harbor S-Line"!

73,

Craig Roberts
W3CRR

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