I think TT recommends judicious use of DeOxit (formerly called Cramolin)
forclening contacts. It is now stocked by MCM electronics.
From: Steve Ellington N4LQ <N4LQ@iglou.com>
To: TenTec@Contesting.com <email@example.com>
Date: Thursday, February 25, 1999 4:12 AM
Subject: [TenTec] On Contact Cleaning
>First let me quote from page 5-2 or the Delta 580's manual. This same quote
>is in most TT manuals.
>Rotary Switch Care
>"Selector switches are specially lubricated by the manufacturer for maximim
>life. Brushing on or dipping switch in solvents will wash away the special
>lubricants and shorten the life of the switch. Cleaning rosin from soldered
>connections is not recommended sice there is a hazard of the dissolved
>running into the switch causing resistance problems. NEVER USE COMMERCIAL
>CONTACT CLEANERS ON SWITCHES."
>In my younger days I was guilty of spraying "CONTACT CLEANER" on switches
>and pots. Yes, they would work after a cleaning but only for a short time
>then they would start getting noisy.
>Now I know there are all kinds of expensive chemicals on the market and
>folks have invested $18 in a spray can of some kind of contact lube and
>swear that nothing equals it but I would like for someone out there to try
>this and just see if it isn't true.
>I've been using el-cheapo $1.79 a can WD-40 for several years. I've used it
>on RF switching in linear amps, Front end switches in receivers and all
>kinds of potentiometers and never experienced any reocurring problem. Every
>time, the scratchy, noisy pot or intermittent switch contact has been
>instantly cured of it's ills. WD-40 cleans and lubricates the contact and
>is non conductive.
>Ok. Now I know there's a lot of experts out there who think they know the
>secret formula for WD-40 but according to their web page www.wd40.com . Not
>only is the formula a secret but the number of people who know the formula
>is a secret.
>Just because it's cheap, don't overlook it. Try some and see what happens.
>No flames please. It is flamable. Smells good to!
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