[Elecraft] K3 fan problem

[Eric Buggee]

     Hi all,

     I have had exactly the same problem on my K3 (4520) It is 
intermittent and ahs been that way fo a couple of years! Not causing any 
operational issues except for 160M AM net when it causes the K3 to drop 
back to 5 watts use it to drive a linear with the power out set to 
equivalent of 50 Watts.

     f the fellows at Elecraft service can shed some light on the 
problem I would appreciate any guidance.  I have had the 100Watt Pa out 
a couple of times but nothing looks untoward.

     BTW, I have been having "ERR12V" displayed a few times ! and the 
pins for the PA power feed are the gold plated type.  Any suggestions or 
comments offered will be appreciated.

     73,

     Eric VK3AX.



On 4/17/2014 1:55 AM, Merv Schweigert wrote:
> Noticed this morning when turning on the K3 for the first time after
> being off all night,  that the fans were on and changing speed
> rapidly.  The fan would run between low and the 3rd speed back
> and forth.
> Checking the PA temp it was jumping from 25C to 60C back and
> forth,  thus the reason the fans were doing the same.   It did this
> for about 2 minutes and then went into normal no fan mode.
> Anyone had something like this happen?  Bad sensor?  The radio
> had just been turned on so could not have been up to 60C temp
> indicated.
> Never use more than 35 watts power as I drive an amp all the time,
>
> Thanks  73 Merv K9FD/KH6
>
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