Menu > Setup > Plug and Play [Enter]
You'll go through the TVs setup. Choose HOME MODE rather than SHOP MODE.
Promos should disappear. If not, post back and let me know.
Hey: I just bought the last 26" Samsung LED Tv at my local Best Buy. It was a display model, and when I set it up at home, the promotional imagery was still running along the bottom of the screen. How do I exit from the promo mode?