Comcastt HD Box indicates "Component 3 - Not supported mode"

Oct 31, 2009

- Change to the new Comcast box. After changing, turn on the box and wait 20 seconds for it to download. Then, on your remote,press "Cable", then "Power", then Menu. You will see the settings menu. Set the primary value to (1080i) and the override reading to (480p). The above is what I had to do to get it to work. You can play with the settings if that doesn't work, however the new box is 1080i. The old box is 720p. After you complete the settings, press "Power" and then select your connection on the TV remote. Hope this solves your problem Have a great day