Instructions
Turn on your television and PS3 console.
Press the joystick on the PS3 controller to the right to move across the category menus on the main PS3 display. Move the stick until you highlight ̶0;Settings.̶1; This is the first icon to the right of the ̶0;Home̶1; category.
Press down on the joystick to scroll through the settings. Highlight ̶0;Video Settings,̶1; and then press ̶0;X̶1; to access this menu.
Navigate to the ̶0;BD/DVD Video Output Format (HDMI)̶1; heading, and then press ̶0;X.̶1;
Highlight ̶0;Automatic̶1; using your joystick, and then press ̶0;X̶1; to select this option. Your PS3 is now configured to automatically detect the best resolution for the current TV, and your margins should fix themselves. These settings apply to both Blu-ray and DVD discs, including games using these disc formats.