How to Change Resolution on HDTV
A high-definition television screen is typically in a 16:9 ratio, which is a rectangular screen. The standard resolution for HDTV is expressed as 1280 x 720. On virtually all HDTV sets, you can adjust the resolution using the remote control by accessing the main menu and the sub-menus that display on your screen. Changing the resolution is simply a matter of pushing a few buttons. The exact wording of the menu options may vary slightly depending on your HDTV model, but the procedure is essentially the same.
Turn on the power to your HDTV by pressing the button on the set or the corresponding button on your remote control.
Press the "Menu" button to display settings options on your TV screen.
Push the down arrow button to scroll to "Display Settings" or similar wording. Highlight this option and press the right-arrow button or "Enter."
Select "Screen Resolution" or similar wording and scroll to the desired resolution setting. The 1280 x 720 setting is standard for HDTV. Press the right-arrow button or "Enter" to save the setting.
Press "Menu" to exit the settings options. On some HDTVs, just wait a few seconds and the screen will clear automatically.