High-definition enabled Hitachi televisions often come with an HDMI input option that allows you to connect high-definition-ready devices to your TV. These devices include but are not limited to your cable or satellite receiver box, a Blu-ray player, or some video game systems that support HDMI functionality. HDMI connections provide a superior high-definition picture for your Hitachi television, although occasionally you may wish to disable the HDMI input on your device. You can accomplish this even if you have never worked with a TV before.
Power on your Hitachi television.
Find the "Menu" button. There is an "Menu" button on both the front face of the Hitachi television and on its remote control. Press the "Menu" button.
Use the arrow keys on the Hitachi television's remote control or the keys on the face of the TV to navigate the menu and select the "Option" menu. Press the "OK" button on your remote control or on the TV.
Use the arrow keys again to navigate the option menu. Use the keys to highlight the "Disable Input" selection, then press the "OK" button to choose it.
Navigate the "Disable Input" menu with your arrow keys and highlight the "HDMI" listing. Press the "OK" button to choose this input. Upon selection of this setting, the HDMI inputs on your Hitachi television will be fully disabled. Additional inputs are listed here aside from the "HDMI" input listing; if you wish to disable other video inputs, highlight and choose them in the same manner and each will be disabled in turn.
Press the "Menu" button on either the remote control or the front face of the Hitachi television once more in order to exit the menu altogether and resume normal operation of the Hitachi television.