On my 2000 Dutch Star 3865, the front trim around the TV was screwed and glued to panel pieces that at first looked like they lined the entire interior of the TV section. The panels actually just went toward the windshield just a few inches past the front of the jammed-in TV.
If yours is like mine, the only screws to mount this "assembly" of the TV framing trim and panels will be found JUST inside the compartment doors on either side. It looks like they bought the TV's, designed the forward upper compartments as they went, put the TV in, jammed the front piece "assembly" in, and then screwed the last four screws in inside the glass front compartments to hold it all together.
You may also want to take a close look at the wooden "frame" around the TV. You may find some small, angular holes that are hiding some small threaded, long screws. I can't remember if they were Phillips or #2 square drive heads. If the entire assembly won't come out as one piece in your bus, you may have to remove the frame first.
The TV should then be easy to get out. Mine was a 27", and I brought it down by myself. I regretted that stupid move before I got it to the floor. Get someone to help you ... those old TV's are too heavy, too awkward, and too high. Good luck!