Try Home mode.
"Press the (left/right) button to select "Shop" or "Home", then the eNTeR/OKbutton.
We recommend setting the TV to Home mode for the best picture in your home environment.
Shop mode is only intended for use in retail environments.
If the unit is accidentally set to Shop mode and you want to return to Dynamic (Home) mode,
press the Volume button and then hold down the MeNubutton for five seconds on the side
panel of the TV."
My tv has recently started to reset brightness and colour settings. I have tried holding the menu button for 15 seconds as I read this in another post. Please can you help.
Model LCD LE46F86BD/XEU