Question about Hitachi 51F500 51" Rear Projection HDTV-Ready Television

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I have a 51 inch 4/3 Hitachi SDX HDTV ready rear projection TV which is 10 years old. Two inch horizonal (black and white) line move from botton of screen slowly up the screen. Each line is about 24 inches apart. Also at times the picture will become dark with muted our of focus images. If you move the Denon SDX tuner slightly or jar it, the picture will return to its clear focus. However the horizonal lines will continue. At other times the picture is fine with on lines. I do not know if this is a TV problem or a Denon Tuner problem. The TV and the Tuner are 10 years old.

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  • Albert Derden May 17, 2011

    If the horizonal lines continue after conecting the TV straight to the Satilite Receiver what would be my solution?

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  • Master
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Run your signal straight to the TV instead of your Denon. If the problem goes away, you know your issue is with the Denon and not the TV.

Posted on May 17, 2011

  • David Duncan
    David Duncan May 17, 2011

    I would check your ground. You might need to attach a 3 prong adaptor to your plug at the outlet. If problem persists you could have a main board issue. Another way you can check, is see if it does it on other inputs.

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Two inch horizonal (black and white) line move from botton of screen slowly up the screen. Each line is about 24 inches apart. Also at times the picture will become dark with muted our of focus images. ...


The best way to determine what is at fault is to disconnect the Denon tuner and run the signal straight to the TV. If the problem goes away, the Denon is at fault.

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