remedy

So I have a question.....? I bought a new TV like a yr ago. It's a flat screen and pretty big. I was watching it about a month ago and out no where I heard a loud a pop and the screen went black. I turned it off and turned it back on and it turns on but the edges of the screen are black and the color is all purple. I don't watch TV much so I haven't thought to do anything about it but now it's kinda annoying me. Any ideas what the hell happened?

THANKS XOXO
REM