If it's a REALLY old K2 there is a modification that you should perform in the wiring of the control as well as replacing it. It's on the Elecraft website.
Vic 4X6GP/K2VCO > On 21 Jan 2016, at 11:36 PM, Don Wilhelm <[email protected]> wrote: > > Jacob, > > If the AF Gain is scratchy when turned, the best cure is to replace it. > Those small pots are sealed, and I doubt that you could get any DeOxit into > the body of the control. Even if you can get some inside the pot, the "cure" > will not be long lasting, you will eventually have to replace the pot, so > 'bite the bullet' and do it now. > The carbon (or other material) that forms the resistive layer over which the > wiper rides can become pitted and work with extended use - there is no way to > fix that other than replacement. > > 73, > Don W3FPR > >> On 1/21/2016 10:53 AM, Jacob Chambers via Elecraft wrote: >> Hello; >> I have an older K2 that has developed a raspy, scratchy sounding CW note on >> receive. All bands affected. The transmit sidetone is clean as a whistle. >> Headphones or external sparker are the same. Seems like there is some >> popping and scratching when I bump or play with the AF gain control. Could >> that be it? And I'm thinking of spraying with DeOxit contact cleaner. Is >> that OK? Thanks! > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
