For plasmas, there's a difference between "Image Retention and Burn in". Most of the time, people who see a "static" image on their screen are usually a form of Image retention and are not permanent. It's usually "Pretty hard" to get burn-in now. Most sets come Pre-broken in at the factory. Yes there's a "break-in" period for Plasmas. When you get a New Plasma set, regardless if it was broken in or not, always perform that procedure.
You can go buy a "Break-In" DVD and let it run for about 250 hours or running non-news broadcast stuff. You can always run shows/movies at full screen for the same amount of time too. By letting your TV run during the break-in period allows the phosphors to "age/Mature" so they don't get as excited.
PM me for more info or ask here.
