[Elecraft] Normal KPA500 behavior?

[iain macdonnell - N6ML]

On Fri, Feb 10, 2012 at 11:28 AM, Mike Walsh <ke5akl at yahoo.com> wrote:
> My KPA500 does a couple of things that seem a bit odd.  Other KPA owners - do your KPAs also do the following?
>
> 1)  When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C.  When I release the key the temperature goes immediately back to the real value.  Lower transmit power levels cause a correspondingly lower drop in displayed temp.  This behavior causes the temp display to bounce around while transmitting CW.

This does NOT sound normal, and is something I think you should worry
about right away. If the temp sensor is not functioning correctly, you
could cause damage by not having the fans engage at the appropriate
speeds, and over-temp protection mechanisms could fail to be invoked.

Suggest contacting Elecraft support for guidance on this...

    ~iain / N6ML