Getting old tv off the wall 2007 Itasca Navion

[painterpatti]

We have a 2007 itasca Navion, it has the tv over the door. It is mounted on a rigid bracket. We would like to install a newer tv on a flex bracket, but we can’t figure out how to get the old tv down. There is very little space to even get my hand behind this. We have tried to lift it hoping it is a magnet holding it , but it doesn’t budge. I have attached pictures, you can see by the shots from under the tv two bolted brackets, but the access is very small. If anyone has gotten theirs out i would greatly appreciate your input.(sorry for the poor quality photos but the access is very tight.)