[Elecraft] How to test serial communications?

[Pete Smith]

Today we had a heavy lightning storm pass through the area.  All of my 
antennas were disconnected, as were all the control cables, but the 
computer and my new K3 were still on.  When I returned to the shack 
after the storm, everything appears to be working normally *except* that 
none of my software can communicate with the K3.  The radio shows no 
error messages, and transmits and receives normally - just no 
communications.  Alas, I have no other serial devices in the shack, and 
my backup computer does not have a serial port, so I can't test to 
determine whether it is the port on the computer or the KIO3.

Is there any diagnostic that can be performed in the K3 to determine if 
in fact something's blown on the KIO3 board?

-- 
73, Pete N4ZR

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