[Elecraft] Lightening

[H. Cary]

I had a similar event.  It took out my Yaesu rotor and control box, SteppIR controler board, and my KAT500.
Like you, my K3 and KPA500 wre A-OK
I sent KAT500 to Elecraft for repair and mine acted just like yours. (you must get an authorization # before sending).  It was DOA @ Elecraft and cost of new board about equal to a new KAT500 - bummer.
Good luck, I'm installing polyphaser's on SteppIR and new Yaesu rotor control lines this week. 
73,
Cary, K4TM
Lynchburg VA
K3-100 #3448, KPA500 #698

Sent from my iPhone in Lynchburg VA.