[R-390] Cleaning volume control

[Curt Nixon]

I have been using Deoxit fader lube as a cleaner, lube and it has worked 
very well on wirewound as well as comp pots in my classic Drake, Yaesu 
and now the  R-390A.

FWIW

Curt
KU8L
www.curtsworkshop.blogspot.com

k2cby wrote:
> De-Ox-It is great for switches, relays, plugs, jacks, tube sockets and other
> metal-to-metal contacts, but I have 
> never had good luck using on carbon volume controls - it sometimes dissolves
> the carbon 
> or whatever binder is used to adhere the carbon dust.
>
> My favorite treatment for carbon pots is ordinary "TV tuner" cleaner/lube
> spray from Radio Shack.
>
> If you are cleaning a mil-spec quality sealed pot (Type "AB" or "Type J"),
> you can drill a 1/16 (or smaller) hole 
> in the back, shoot in the solvent, shake it out and either solder the drill
> hole shut or cover it with tape.
>
> Lesser-quality pots (even if "sealed") can be opened by judiciously prying
> up the tabs on either side of the 
> bushing (usually 2 tabs on each side) that hold the rear cover to the front
> plate. Use slip-jointed pliers to close 
> the tabs when you are finished.
>
> Miles B. Anderson, K2CBY
> 16 Round Pond Lane
> Sag Harbor, NY 11963
> Tel.: (631) 725-4400
> Fax.: (631) 725-2223
> e-mail: k2cby at optonline.net 
>
>
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