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    amatuerhour's Avatar
    amatuerhour Posts: 11, Reputation: 1
    New Member
    		  
    #1

    Jan 6, 2010, 07:02 PM
    HD TV picture shifts at edges, other source OK
    I have a Vizio 37 inch TV - connected to a Comcast HD cable box. Everything was fine unil this evening.

    The cable TV picture now has a fiarily significant shift/flickr on the lower edge with a white line appearing on and off. The picture overall seems to shift. This is HD and non HD channels being played through HDMI. The picture is fine if I play the same cable input from the cable box through coaxial cable, and not the HDMI cable. I also tried different HDMI cables, and different HDMI inputs with the same issue. A DVD player connected via coaxial plays fine as well. I don't have another HD source to test.

    It appears the issues are either with TV ability to play HD, or comcast HD signal.

    Anyone have any ideas?
    FadedMaster's Avatar
    FadedMaster Posts: 1,510, Reputation: 148
    Ultra Member
    		  
    #2

    Jan 7, 2010, 07:33 AM

    Did you try adjusting the aspect ratio? Usually this is done through a zoom button or format button. Something along those lines should exist on the TV remote, and possibly on the cable box remote. Usually you want the TV set to 16:9 and then adjust everything through the cable box.
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