What’s wrong with it? Could be one of many different things. This article might give you an idea of what’s involved in a repair job:
www.brighthub.com/electronics/home-theater/articles/47893.aspx
I have a Samsung 32” that went wonky on me just out of warranty (
planned obsolescence?). The Samsung service centre couldn’t or wouldn’t “repair” it. They replaced the screen. Cost Rp 2 juta. That was a couple of years ago. It’s still working fine.