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by SwiftOne on February 3rd, 2006

SwiftOne

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My HDTV and HD cablebox are connected with component cables. Some of the channels make a popping or static noise. The connections are fine; what else could be causing this?

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Answers. 2 helpful answers below.

  • by RedJohn on October 16th, 2006

    RedJohn

    It is possible you are hearing noise on the mains power.

    Many common household products feed noise back into the mains, which affects other devices connected to the same local power. Motors, in particular those with brushes, are very noisy. Every time one starts or stops, a very short-duration noise spike is fed back into the mains. Brush noise can also be fed back into the mains. Motors can be found in many appliances, such as refrigerators, freezers, air conditioning systems, furnace blowers, microwaves, bathroom fans, and vacuum cleaners.

    Other equipment also injects noise back into the mains, including digital audio-video equipment, such as DVD and CD players.

    The first thing would be to test your equipment with every piece of equipment in the house that uses a motor turned off or, better, unplugged or disconnected at the circuit breaker. Only turn on the equipment that is absolutely needed for the test.

    If the popping noises remain, the first thing to do would be to remove the interconnects to ensure that they aren't the source of the problem. Run the television by itself with it disconnected from the external tuner and the tuner unplugged from the wall.

    If it is quiet, connect the interconnects between it and the turner, but leave the tuner off again. Run it for a while to see if the noise is present.

    If all still sounds good, plug the tuner back in and see if the problem returns.

    If the noise returns at this point, the tuner is the source of the problem. If it does not, start up each piece of equipment in your house, one by one, and see if the noise returns after any one of them is again running.

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  • by Anonymous on February 25th, 2006

    Anonymous

    One thing that could cause this would be an improper/poor connection. Check and make sure the cables are connected firmly. Another reason could be, that the HD cable are routed along with other electrical wiring that produces/carries so much electricity, that it distorts the signal, this is doubtful, but at the same time, if this occurs with an RJ-45 (Cat5 Ethernet cable, for use with network/internet) it does produce distortion. The last thing that I could think of would be bad cables, one of my s-video cables just went bad and I had'nt used it but for maybe 2 monthes collectively. If none of the above work, maybe you could consider that it was the box or the service.

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