[Elecraft] Lost Receive on All Bands

[Richard Thorne]

I have a K3 (1 of 2) that suddenly has lost all receive.  I've checked 
the obvious things.

     - I'm not using the rx antenna
     - I have antenna 1 selected and the coax is attached to it
     - Diversity receive is turned off

I have disconnected all connections on the back of the rig.  All I have 
connected is the power supply and a length of coax connected directly to 
an antenna (bypassing all antenna switches).

The rig appears to be transmitting just fine.  If I press the xmit 
button for a second I get the expected 20 watts out and the swr is 1.0:1

I have two K3's in the setup.  Both are connected to a Microham MK2R+ 
which prevents both rigs from transmitting on the same frequency. I also 
have a full set of 4O3A high power band filters in place to protect each 
rig.

Any other suggestions?  I plan on calling Elecraft later this morning as 
well.

Thanks

Rich - N5ZC