If you even read the manuals, for some products the extra set up procedures are not always there. Cable boxes often require pushing and holding a couple of buttons on the front panel to access the menus to set up for the various formats.
people dont know they have to set their cable box to the desired res; 720p/1080i for HD and a nice 480p for sd channels.
Also DVD players which go hand in hand with the HDTV must also be adjusted to 480p,
And for the above you need to know about the proper cords

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