If you own a Sharp LCD TV and the auto brightness keeps going back Dynamic Fixed... Here is how you fix it.
THE FIX: switch to TV MODE by toggling the input then hit the MENU button. Move over to SETUP. A new option will appear, EZ SETUP. Go through the wizard. When you get to the TV LOCATION option select HOME.
The STORE option resets the TV to Dynamic Fixed after 30 mins of remote control inactivity in case someone messes up the picture settings while it was on display at the store.
This was driving me nuts!