You may have selected "STORE" or Store with Demo mode instead of "HOME" or "Home Use" mode as your viewing environment. When in the "STORE" mode or Store with Demo" the picture mode will regularly reset to “Vivid” and a Picture Refresh message will be displayed on the screen.
To change the Viewing environment to "HOME" or "Home Use" disable the "STORE"or "Store with Demo" mode;
All previously programmed channels should still be available.