Still cacatching up, but I had this problem, I had the TMV710 on 
sysop mode, which is turned on by hitting the far right butten with 
the power mode, and I forgot that I had it on, and once I turned it 
off by pressing that butten and the power butten off.  Then when I 
went back to crossband, it worked like it should.
I hope this helps.
Mike
KD2CDUAt 11:25 AM 6/13/2014, you wrote:
>For those on the list with Kenwood TMV-71A rigs, I can't get my
>rig to go into cross band mode.  Used to do it all the time but
>haven't done so in a while.  I must have forgotten a step.
>I checked menu 403 which says cross, A band Tx, or b band tx,
>then I turn the rig off hold down the third button from the left
>in the row of buttons on the bottom frunt pannel, turn the rig on
>and it acts like it's in cross band mode, but is not.  When I
>turn the rig off again and hold down the third button again and
>turn the rig on, it revers to normal mode, but checking the a and
>b memories it has changed them back to memory 1 and 9.  I don't
>know what I am doing wrong.  Help!  Jim WA6EKS