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New Contributor
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cable box
powers up. shows 480hz but no picture on tv. tryed rebooting. no luck.
Bruce
+4 more
Honored Contributor III
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Obvious question: is a video cable (either HDMI or Component) connected from the OUT port on your cable box to the IN port on your TV?
Is your TV selected to the correct Input, such as Cable TV?
Cox issues used and supposedly bench-checked cable boxes. However, Cox issued me a cable box with a faulty HDMI connector, meaning no signal. You may need to exchange your faulty cable box. Take your remote with you.
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