[Elecraft] KAT2 only intermittently recognized by the K2

[Ariel Jacala]

Elecrafters

I have been using the KPA100 for a while and the K2 QRP top has been sitting quietly in its box for a few months.  Last night I decided to reconnect it for potential portable use and the the K2 does not recognize its presence- (i.e. the menus for the KAT2 do not show up).  I decided to unplug and re-plug the connectors while the K2 top is standing next to the K2 and lo and behold, the K2 recognizes it on the menu.  As soon as I bolted the top on - the K2 un-recognized the KAT2.  I went through the routine of unplugging and re-plugging the 12V and RF connectors but as soon as I tightened the top screws the KAT2 was no longer recognized.  Has this ever happened to anyone in the reflector?  Perhaps someone can shed some light to steer me to solving this problem.

Ariel NY4G