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

[Don Wilhelm]

Before Ed cuts traces on his K2 -- he said the serial number was above 
3000, so it already has those wiring changes embedded on the board.

73,
Don W3FPR

On 2/10/2015 12:13 PM, Phil Wheeler wrote:
> 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
>>> ______________________________________________________________
>
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