So far, just pushing up doesn't seem to release the TV from whatever mount they used at the factory. I have the same access panel inside the clothes closet on the right, to access the power plug and gain some access to wires on the front underside of the TV. (power, red/yellow/white, coax)
I'll try to lift it off again, but I may have to look at another TV for the outside if I can't release it.
Ken and Terry
2010 Georgetown 330TS being pushed by our
2017 GMC Terrain toad (4 wheels down)