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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