[Elecraft] K2 Clean or replace AF Gain control?

[Don Wilhelm]

Tom,

The "Alternate AF Gain Wiring" change is present on the board wiring of 
all K2s with a SN greater than 3000.

73,
Don W3FPR

KG3VTomZ at gmail.com wrote:
> Don,
>
> Mine is SN 5848 (I think), so does that mean the "alternate wiring 
> mod" does not apply? I am sure this pot was not like this from the 
> original build. I also suspected that it may be pointless to try and 
> clean it. I will replace the two.
>
> If this is something that will happen after a couple years, maybe I 
> should buy a few of them (or look for a higher quality/cost 
> replacement part).
>
> Thanks and 73,
>
> Tom, KG3V
>
>
> On Nov 10, 2009 3:27am, Don Wilhelm <w3fpr at embarqmail.com> wrote:
> > Tom,
> >
> >
> >
> > If the K2 SN is below SN 3000, then I would suggest the Alternate AF 
> Gain wiring mod be done.  If the pot still is noisy, then replace the pot.
> >
> > For SN above 3000, just replace the pot.  The use of cleaners is 
> "iffy" IMHO - if the pot is worn, no cleaner in the world will help it 
> on a permanent basis - any improvement will be short lived.  Besides, 
> it is difficult to ge any cleaner inside the pots used in the K2.
> >
> >
> >
> > 73,
> >
> > Don W3FPR
> >
> >
> >
> > KG3VTomZ at gmail.com wrote:
> >
> >
> > I just noticed my K2 has a problem with the AF Gain control. It  is 
> "scratchy" in the area where I use it most. I see that the RIT control 
>  (rarely used) also has some linearity issues. The rig is about three 
> years  old. I do not use it on a daily basis, but I do use it in 
> contests , where  it gets stressed pretty well.
> >
> >
> >
> > I must either clean or replace the AF Gain control ASAP, and I see 
> it will  be rather hard to get at. Can anyone tell me if these 
> controls can be  accessed to clean them, or should I just order 
> replacement parts? It would  help to know before I tear the rig apart.
> >
> >
> >
> > Thanks and 73,
> >
> >
> >
> > Tom, KG3V
> >
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