Tv on 831ress
Unless you were told up front and they discounted the unit a stolen TV should be the dealer's problem, not yours.
Edit: dang send button's too easy to brush on the iPad. Continuing on,
I'd be asking them to replace the TV. I'd also be worried about any possible damage if the unit was broken into.
To answer your question, in general, probably, but that's going to depend on what TV bracket they have installed, and what TV you get. It's a matter of how much weight it can hold, not size (as long as it fits). I've seen older 19" flat screens that weigh more than some 40" screens today.
There's no use crying over spilled milk, unless it's on your keyboard.