Don’t try to return a TV you’ve owned for three years. I know, you think you’re clever. But Best Buy has a system that tracks serial numbers. They will politely say, “Sorry, that TV is older than the internet meme you’re trying to watch.”
Also, don’t return a TV that’s missing major parts—like the screen itself. Yes, someone once tried that. The employee probably laughed for an hour. Don’t be that person.