Well it depends on what happened to it. You might want to trouble shoot with your customer service but honestly if you think it is going to cost more than it's worth then you have to basically get a new t.v. That will be the better option for you for sure.
This all depends on the problem at hand and how much money it would cost to repair it. I would look at the current TV market compare features and figure out if it is worth replaceing it or repairing it.