Question about Vizio VW42LF 42 in. LCD HDTV

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Picture but no sound on vizo VW42lf 42 in HDTV

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Let verify first to narrow down to where the problem can be. First, make sure the MUTE function is not activated, then check the on screen sound set up menu to make sure the speakers are not set to OFF. If the setting is OK, then attach the powered PC speakers to the Audio Line out RCA jacks (Red and White) to see if you can get the sound there, if you do, then the problem can be in the power amp circuits, if you do not get the sound at RCA jacks, then the problem can be in the sound processor circuit. Please post back what you find.
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Posted on Jul 20, 2010

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1 Answer

Recently installed cable, tv started popping, now no picture or sound


When you say popping, was the sound coming from the speakers? or from the back of the set? My initial suspicion would be power supply capacitors.

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After replacing the main board, a software update will be necessary in most cases. Check it.

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Which manual are you needing? If its the user manual you can usually get one by typing your model number into the search box on www.retrevo.com

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The set will need to be serviced. There are several things that could cause this. It could be the main board or power supply that has an issue.

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There have so many reasons for this fault. have to check from its main power supply regulation section to its display panel. Contact any experienced service technician.

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you need to buy another screen or you was tilt(plays only radios)or sound programes

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If the backlights for the screen do come on and you also have 12v and 5v feed the main board then it does sound like the mainboard will need to be replaced.

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