[Elecraft] K3 loss of signals and no xmit

[cx7tt at 4email.net]

K3 #250 was listening to the 15m ssb VP8ORK pileup and suddenly lost all 
signals. I tried switching to Ant 2 but that did not help. It will not 
xmit; nothing showing on power out. It was previously set to 55w as that 
it the power I use to key the Acom 1000.
Switched to a different transceiver with same antenna system and all 
works ok there.
Any ideas what to look at? Shack temp was around 85degs....DISP showed 
FP 40C and PA 36C.
Any ideas?
73
Tom
CX7TT