[Elecraft] KXV3B installation problem

[k7ca at infowest.com]

Hello,
  I upgraded my K3 ser# 6360 with a new KXV3B module and now is 
doesn't TX or RX. I thought the new module might be defective so I 
put the original KX3B back in with the same results. I did a 
synthesizer calibration but that didn't help. I get no error 
displays. With the new KX3VB module I get an increase in RX white 
noise when turning on Preamp 1 but a decrease when turning on Preamp 
2. Also, the transverter outputs do not work.  The Sub RX does work 
however.  Any suggestions on what to check?  Thanks, Al K7CA