Question about Vizio 42 in. LCD TV

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Hi. I have a M420NV everything works but no sound

Have tried every thing out the book also the advice of the side knop . Nothing.

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Please specify what source you are trying to connect to the TV, and what method of connection you are using (HDMI, Component Video, or Composite-RCA).

Posted on Nov 26, 2014

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Hello there

Actually that problem is very common on all LCD TV,, that problem is cause of either inverter board or t-con..

In this case you don't need to check the voltage that is too complicated for you,,only visual check is enough..

I share you my tricks and hope it helps..

Power on your TV turn off your lights..if you will see the light comes from the screen the problem is t-con..if no light the problem is inverter board (backlight) board

Hope it helps..

Don't forget to rate..

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Please rate if this helped :)

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