Instructions
Turn on your PS3. Navigate to "Settings" from the main menu, also known as the Cross Media Bar (XMB). Find "Display Settings" and press the "X" button on your controller.
Select "Video Output Settings" and press the "X" button on your controller.
Select the type of cable you are using to connect your PS3 to your TV and press the "X" button.
Select only "Standard (NTSC)" from the list by pressing the "X" button when it is highlighted.
Select your TV type, which will either be "4:3" for standard screens or "16:9" for widescreens. Press the "X" button.