[Elecraft] KPA1500 front panel locked

[Gary Johnson]

Helping a friend connect his KPA1500 to a K3. The AUXBUS is working, following the radio etc. like normal. However, as soon as that cable is plugged into the KPA, it’s front panel buttons all cease to function. Remote control via USB or ethernet work fine. The AUXBUS cable is a proper one, not a VGA cable. I’ve never seen this before and can’t find any reference to a locked front panel.

Gary NA6O