[1000mp] Problem with 1000mp - help needed

[Clifford Smith]

Have the following problem with my 1000mp--
Once in a while after transmitting the rig "hangs-up" and doesn't switch
back to receive.  I can correct the problem by switching to antenna B and
then back to A.
It does the same thing when I transmit on antenna B  and the fix works as
well.
Has anyone else had this problem?  Suggestions?
Recommendations for a repair shop other than the factory shop?
Thanks
Cliff (KF8K)