Possible it has angled bracket attached to the wall, then a second metal to the TV back to hang with hooks down on the first? That second screwed with two screws at the bottom to keep it from bottom going forward and then unhook from top?
Pictures can make more sense if this is what you have!!
Snips from this parts catalog:
https://catalog3d.winnebagoind.com/menu/Parts.htm under TV wiring!
Click for better view!
Red is wall bracket, blue attached to TV and remove screws to swing bottom forward and then lift up to remove?
See it that fits what you have?
But there are two builds for that year, early and late and I did not check the other!
__________________
Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!