Question about Vizio VX32L Television
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
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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Posted on Jan 02, 2017
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