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My cable box is hooked up to the HDMI input on the TV. The signal is going out for a second fairly often. The screen goes blue and says no input.

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Sounds to me as though one of three things is happening. In order of likelihood:
A- your cable box is going bad, it happens usually after a year or more, more frequently if the cable box has low circulation and heat builds up.

B- Your Tv is dying, this also happens, but really doubt it.

C- Your hdmi Cable has somehow recently gotten damaged by pinching or some crazy surge. Very unlikely.

My Suggestion, call your cable company, explain your problem and ask to replace your cable box, most companies will allow you to simply bring in your old one and switch it out with absolutely no charge, its quick and painless.

Hope this helps, good luck

Posted on Jul 23, 2009

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A weak or interrupted cable signal will cause digital dropout. Have your cable company increase the cable signal level to your box from their main office. They may have to send a technician out to measure the signal level to see if it is a problem.

Posted on Jul 23, 2009

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