The fix is pretty easy.
Push the volume button on the television set (not the remote) up once.
Then press the menu button (TV, not remote) for about 12 seconds.
It should flash once and go to dynamic mode (center, bottom of the screen), which will indicate that it is now in the "non-store-demo" mode, allowing you to save your picture settings, and access the menus.
Keep me posted!
Was wondering if you could help me i recently bought a series 6 samsung 40"lcd in roseblack. my problem is that my picture is constantly on 'store demo' this is shown when the 'info' button on the remote is pushed. Is there anyway of getting this off as i think its effecting the quality of the picture and e-modes reset after a short while. i have tried reseting through the menu system but this does not change it, is there another way of reseting to the factory settings as my tele was ex display and im not sure whos pushed what!, also should ibe hearing a popping sound now and then?
thanks for reading hope you can help me