[Elecraft] K3 - PA Temp Unstable

[Mike Cox]

I'd like to see how this is resolved. I note the silence about it after 
your post.

My early K3 (sub s/n 500) started doing this same thing intermittently 
several months ago. The problem occasionally got bad enough that the rig 
would cut back to low power mode and report the PA over temperature.  
The problem would manifest itself upon power up after the radio had been 
off overnight. Usually within and hour after power-up the PA temperature 
report would stabilize and all was well. I pulled the PA board off and 
did the gold pin replacement but this did not resolve the issue. A month 
or so later, the temperature report stabilized. I have not yet pulled 
the front panel to change out to gold pins in that area. As the radio 
has not exhibited this behavior for the past month, I'm holding off 
until I can tell that I've fixed it (or not) when I work on it. I love 
repairing intermittant issues (not!). Anyway Paul, your problem is not 
unique.

73,
Mike, AB9V

On 1/18/2014 3:41 PM, paulb wrote:
> Hi  folks
>
> K3 here owned for about 4 years.
> Latest firmware.
> Last couple of days at power up the PA Temp is unstable.
> LCD flicks between 27 and 40 degs C.
> TX and RX same reading.
> Noticed the rear fans starting and stopping
> Reloaded firmware no change.
> Before lifting the hood anyone got a pointer what to
> check ?
>
>
> thanks
>
> cheers
>
> Paul b
> zl1ajy
>
>
>
>
>
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