[Elecraft] K3 No RX & No RF output

[Ralph McClintock]

  I folks,
Just turned on my K3/100, SN8600 series, rig but I now have no receive 
plus no transmit RF out. And, CQWW RTTY is in a few days. The K3 worked 
perfectly yesterday but today no RX, no TX, other than that single (non 
RF) bar on RF out when keyed. It is not in Test mode, not in Transverter 
mode. Just shut down yesterday, turn on today and nothing. The Pre-Amp 
on/off amplifies the noise, so it looks like the RX is working just has 
no antenna input. It is not antennas, coax etc as the K2/100 sitting 
next to the K3 works perfectly on all bands/antennas. Yes, I did check 
it directly to the same antenna as the K2. It feels like a PIN diode 
problem to me. Any ideas I may have missed.
Thanks, W1ZK