[1000mp] Mark V Field, Receiver Goes Deaf

[Bill Gillenwater]

I have a fairly new Mark V Field that I recently moved to a new qth. 
After the move, I get an intermittent receive problem. It goes from 
hearing well to deaf. It comes and goes. I switched A/B antenna 
positions and no change. Transmit is fine. Is there a diode in the first 
stages of receive that may be out? Are there boards/components that 
might need reseated?
thanks
73 Bill k3SV