An HDTV can be connected to a cable box using an HDMI cable or component cables. An HDMI cable combines audio and video in a single cable, while component cables are constructed of three video cables (red, green and blue) and require separate RCA cables for audio. An HDMI cable box can also be connected to a HDTV using standard RCA cables or an S-Video cable, although the video will not be displayed in high definition.
Plug the red, green and blue cables from one side of the component cable into the red, green and blue component jacks in the back of the cable box.
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Plug one end of the red and white audio RCA cables into the red and white audio output jacks on the back of the cable box.
Plug the red, green and blue cables from the other end of the component cable into the red, green and blue component input jacks in the back of the HDTV. This set of jacks will have a label such as "Component 1" and will have five inputs: red, green and blue video and red and white audio.
Plug the other end of the red and white RCA cables into the red and white audio input jacks on the back of the HDTV. Make sure they are inserted in the audio jacks on the same input source as the component cables.
Turn on the HDTV and press the "source" or "input" button. If a menu is displayed, select the input that you plugged the cables into. If a menu is not displayed, press the source or input button repeatedly until the correct input source is selected.
Things You'll Need
Component cables (red, green and blue)
RCA cables (red and white)
HD cable box