[Elecraft] K3 Powers Off

[Mike Furrey]

Suddenly my K3, upon touching the key will power off. When I power on, I can make a contact or two and then off again. This started with three hours to go in FD (operating 1D at home). Checking the archives it seemed it was a thermal problem so I partially disassembled the radio, cleaned out dust and reseated boards. I checked the p/s and swapped p/s and no change. The problem is not band or antenna dependent. The radio is not even warm when this happens.

Any ideas before IARU contest starts tomorrow?
Thanks, Mike WA5POK