Question about Vizio m420nv 42 in. LCD HDTV

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Wel the Vizio Tv lost Sound.

Have tried everything also the advice with the knop. still no sound

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Check whether the audio is muted by accidently. Enter its sound menu, and check it. If muted, as you know there will be no audio output. If not muted, check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Posted on Nov 07, 2014

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Hello
Either your tVs speaker of its audio output IC has damaged. Check the TV by onnecting its audio out jack to any other audio source, like amplifier or so, and see whether there is sound output comes through the outer source or not. If there is sound from the amp; and no sound output from the TV, check the speaker first. If it is OK, replace the audiou output IC. If there is no sound through outer amplifier, the audio detectcion section inside your TV is faulty. You must have a thorough knoledge and skill to repair it. OK.

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I can see good video, but I hear no audio with my XWH200 adapters?
Published 11/21/2011 06:46 AM
Updated 11/21/2011 02:26 PM
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Vizio does not have a RESET button, the best approach is unplug the TV.

1. Make sure nothing is muted
2. Hook up a dvd to it and try playing it if you got sound reboot your direct tv box by unplugging it.
3. Go to step 1
4. if DVD does not have sound then the tv will need to be looked at for other causes.

Please be considerate when leaving postive feedback and ratings, for your FREE answer today, thank you

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