I found a site that might be able to help you.
http://www.wikihow.com/Fix-a-Stuck-P...an-LCD-Monitor
He recommends some software in his video. So if your tv has a vga port to hook up to a computer then I would try that. I personally have never had to deal with a dead/stuck pixel, so I don't know if this will work. Although, I have heard from friends that this sort of thing actually works. So good luck...