Looking at pics of your TT on-line, I see you have some outside connections on the street side at your corner stand. I'm guessing your door doesn't "normally" open. Look carefully. Forest River likes to make doors that have two hinges on one side, as you'd expect, but then they put another hinge on the other side so you can't open the door without removing the extra hinge. My 2503S has this on one of the doors under the bathroom sink. The water heater and bypass valves are behind it. Also has one for access to my slide controller.
It looks like your water heater is in the nightstand to the right of your bed. I'm betting if there's an access door on the night stand, it's got 3 hinges, too. (Unless you can get to it from your outside kitchen somehow.
Can't comment on the TV. I've never tried to remove mine.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10