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Have another vizio 42in just replace min ciruit board because i was loseing sound work fine first day after that same problem

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Hi:
The problem is not the main board, it isthe heat sink installation on the audio output IC, the audio board is the problem as the installation used to draw the heat from the IC has melted causing the shield to short to ground causing no audio and in some instances shorts speakers. Vizio should have a audio repair kit that solves this problem. Get in contact with vizio for any upgrades or Tech Bulletins concerning this matter with audio issues.

Posted on Feb 09, 2010

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Have you removed boards and tryed resoldering them Main board around the tuner.

Posted on Feb 06, 2010

  • ladywinn
    ladywinn Feb 08, 2010

    Main Board is what controls sound Call Encompass Parts Distrubtion 1-800-638-3328 they have boards for this TV.

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  • Master
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Check the internal amplifier. not external. there two other things this can be the speakers if blown or the audio amp is blown if the amp is blown the the main board will need replaced. Tech have special equipment needed to replace this and it would run about 250

Good luck and have a good evening!

Posted on Feb 04, 2010

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Apologies!! By trying to delete duplicate message, both were deleted. 5yr old 55" Vizio LED loses sound after 10-20 min. Both speakers & AV jacks. Both cable and dvd.


check and replace the damaged component/s at its audio output section circuit. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Pull up older posts. Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. http://electronicshelponline.blogspot.com/

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I hope this help you! Please feel free to give me a call or message me if you have any questions! Ask for Dave!

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1-503-432-9904
pleasefixitdave@yahoo.com

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