[Elecraft] K2 gettin' old.....

[Phil Wheeler]

Ed, If you're noticing some scatchiness in the AF 
gain, there is a better way to deal with that -- 
if you have not already. I did the AF pot fix last 
year in K2 #380 and it made big difference.

Info is here: 
http://www.elecraft.com/Apps/K2_AF_pot/K2_AF_gain_app_note.htm 
but this may have been the wiring in yours as built.

Phil W7OX

On 2/10/15 7:53 AM, Don Wilhelm wrote:
> Ed,
>
> If it ain't broke, don't "fix" it.  The most 
> probable controls to wear out are the AF gain 
> and the RF gain, and if you use it a lot, the 
> RIT control.  Wait until they get scratchy and 
> then replace.
>
> Rather than trying for a temporary fix with 
> DeOxit or other compounds, I suggest you simply 
> replace the controls that are bad. What usually 
> happens is that the carbon trace that the wiper 
> runs on becomes pitted with use, and for that 
> there is no good cure other than replacement.
> Besides, the pots used are rather tightly 
> sealed, and I don't think you could get any 
> spray inside where it would do any good. Unlike 
> the old unsealed pots of yesteryear.
>
> Elecraft has replacement parts - I buy parts 
> from them often, but then I repair a lot of 
> Elecraft gear - one or two each day is not 
> unusual for me.
>
> 73,
> Don W3FPR
>
> On 2/10/2015 2:19 AM, Eddy via Elecraft wrote:
>> Greetings all....I just realized my K2 (# 
>> 3500+) is getting old, I can't remember exactly 
>> when I bought the kit from Elecraft, but at 
>> least 12-13 years ago.
>> So, as things begin to wear out, any 
>> suggestions on what to clean, as in different 
>> front-panel POT controls that and suggestions 
>> what to use to clean them? I have used Detoxit 
>> and it seems to work very well.......
>> Thanks all........73
>> ed - k6sdw
>> ______________________________________________________________ 
>>