K3 here has developed a slight problem with the PA temp sensing..
it is flicking between normal and +40 several times per minute.
noticed the fans starting in a very cold shack RX only running.
This may have been happening for a while, but never noticed until
the cooler mornings.
Havn't taken a look at the PA or circuits yet, wonder if another user
has a start point ? My guess is the sensor or related components.