Question about Vizio GV42L 42 in. LCD Television

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Vizio 42'' HDTV flatscreen

My vizio tv is making a strange humming/buzzing noise that doesn't seem to be coming from the speakers. I run external speakers for regular sound so I know its not a speaker issue. The noise seems to be coming from the core of the TV and I can only imagine it has something to do with the picture itself... I don't know much about tv's but I do notice when its making a sound i've never heard before.

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  • TrashyRabbit Oct 24, 2008

    I have a 37" Vizio LCD and it is making the same noise.

  • rstorch33 Nov 03, 2008

    Same TV - Humming sound lower then higher every few seconds.

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I have a vizio GV42L and it has a loud humming sound coming from it as well as pink lines running through the picture. Help please.

Posted on Jul 31, 2013

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The TV usually hums when the backlight setting is too low. So turning it up should get rid of the problem. To do this please follow these instructions:

1. Turn the TV on.
2. Press the Menu button on the remote, located right below the channel changing button.
3. Press the down direction button, located at the middle of the remote. Press that button until the backlight is highlighted.
4. Press the right direction button until the backlight is at 100.
5. Press the OK button and then the Exit button until you get back to your picture.

Posted on Feb 21, 2009

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Posted on Jan 02, 2017

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