On the TT I just sold I made that conversion. The TV spot was a hole ( cabinet w/o a door ) to put an old CRT TV in. I made a door, hinged from the top with a piano hinge. Mounted the new flat screen TV on the outside of the new swinging door using a standard TV wall mount. Drilled holes in back of the hinged door for the cables etc. Tricky part is figuring a way to hold the door up ( with TV on it ) to access inside of cabinet. I just used a prop stick as I only had the DVD player in there along with items that were not used often.
