[Elecraft] K2, no I/O

[Bob Baxter]

Further info on my problem.  The I/O is inop with either the original or the KPA100 plugged in.  I suspect the problem may be on the control board but that gets into ICs and I have no idea what goes on in them.
Bob AA7EQ

 

It's been a few years since I've asked for help but I need some now.  I'm unable
 to get the K2 recognized by any computer program.  So far the voltages have checked close until J2.  Pin 1 is showing 2.3v and should be 0, pin 3 is showing 1v and should be 5v.  J1 voltages are pretty close.  The port is on, first thing I checked.  Any
 ideas?
Bob AA7EQ