Ok, I’m not sure if Dutchmen used/uses the same type mounts from year to year… nor can I be sure my memory from the time I removed my exterior tv a few years back is correct. So with those two caveats out of the way…
I seem to remember that my exterior tv had the same mount as the large tv in the main living area of my rig… just not quite as large.
The photos below show the main tv mount… which was a “button” into a slot system. 4 buttons on the rear of the tv simply fit into a corresponding 2-position rack. To remove the tv, you simply lifted up & out.