Question about Vizio VX32L Television

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Humming noise from tv

Our Vizio HD TV is making a humming noice when watching cable TV. Does not make the noice if watching a DVD.

Only effects this one tv

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If you have a cable 'box' and its plug is not polarized, flip it over to see if that affects anything.  Such line frequency 'hum' can come from several sources but a common one is called a 'ground loop' and can be caused by having chassis grounds not connected to each other.
It can also come from a failed or failing capacitor in a device external to the TV which can allow poor filtering in a power supply and audio problems.

Posted on Oct 25, 2008

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