What type of TV do the Turtles have in the show?
 

You know that old beat-up 80's looking TV with the antenna that was missing one leg where there's 3 books holding it up from the side?

It actually amuses me that with all the high-tech gear Don creates, that the turtles have to use an old beat-up 80's TV they probably found lying in a dumpster or the sewers.

I think later on they upgraded to something a little more modern, though they never had a flat screen.

Actually, they kinda did. I forget whch episode but Donatello's transdimentional portal breaks down permanently so he converts it into a TV that he calls "Turtle Vision".

So Don created the first flat screen TV a good five years before the humans. :)

It's The Foot Soldiers Are Revolting.

The turtles got a new bigger TV in Raphael Knocks Em Dead, I forget, did it have 200 or so channels? And I wonder why they got rid of it and went back to their old TV in the next episode.

Oh that's right. How could I forget!

Odds are the fancy newer one blew up because Donatello was tinkering with it too often.