There can be a few reasons for this.

The Majestic TV’s are Widescreen 16:9 format, designed for HD and FHD TV signals.

These are the reasons why you don’t get full screen:

               The TV Channel is transmitting SD not HD.

                               You will know it is HD normally in the Channel Number it says “HD”

               The TV Picture Zoom Setting has been changed.

                               The Zoom setting needs to be either returned to normal or adjusted for the TV Channel