[Elecraft] K3 loses transmit power

[Charles]

I was using the K3 at low power on PSK, and suddenly had no transmit power.  Zip.  Receive worked fine.  All modes/bands/attempted power levels gave no power out.  The rig was not in test mode, Config showed Tx inh=off, and KXV3=nor.  Unfortunately the K3 is remote--about 250 miles, so an in person look will take a drive.  Power output is monitored by an Alpha 9500 at the remote site.  The lack of power was confirmed by a second user with his K3/0 mini/Remote Rig set.  I saw one posting where a diode on the Rf  board had blown:  this would be nice!  Does anyone have any further ideas??

Thanks, Chuck, N8CL