Thanks for the advice
Thanks all for the advice. I have removed all the screws, including the surrounding piece thinking it would uncover some other screws. Yes, there is a lot of velcro, which most has become brittle, but still sticking. There appears to be two blocks of some sort. It's too dark to really see what they are, but they are about midway from midline to the outer edge, bilaterally, left and right as you face the front of the coach. And, they are about 3/4 of the way to the front edge of the plastic, toward the windshield. When you pull down on the plastic to release it from the velcro, you can see the outlines of the block in the vinyl. I am attaching a photo, taken from the back edge facing forward. The lighter beige is the plastic piece and the upper dark is the TV and mounting hardware. The black item behind the tape is the object which I refer to as blocks.
Regarding the air conditioning issue. The fix was simple, they replaced the rear A/C unit and it is now blowing cool air. The only problem now is that regardless of the fan speed set, low or high, they all seem to blow the same. I have not confirmed that the middle A/C unit is working, however, the bathroom and shower area have cold air through the vents.