[Elecraft] KPA-500 no RF until power cycle

[Roy Morris]

Roger, MW0IDX
Do you have the KEY Cable and the KPA3AUX cable BOTH connected between your 
K3 and KPA500?  Jeoff, G3UCK is using the KPA3AUX cable only.  As I 
understand it, on occasion he is still having no KPA500 RF until power is 
recycled.   I am trying to find out if eliminating the KEY Cable when using 
the KPAK3AUX cable is supposed to cure this problem.  Meanwhile, I am 
removing the KEY Cable from my K Line.  Roy Morris  W4WFB