Question about Vizio M550NV 55 in LCD HDTV

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I have Vizio M550NV LED TV. When you turn it on, it will black out within seconds or minutes. After 1/2 hour and 30 attempts or so it will usually stay on.

When it is sunny and warm outside, the TV work just fine, so figure that one out. I have unplugged it and held the power button in with no success at resetting.

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  • Brad Brown Dec 19, 2016

    Hi Jarrod Sumerlin, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? model number

  • Jarrod Sumerlin
    Jarrod Sumerlin Dec 19, 2016

    M550NV Vizio LED TV

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  • Vizio Master
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The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Dec 19, 2016

  • Jarrod Sumerlin
    Jarrod Sumerlin Dec 19, 2016

    We replaced the power supply and the problem didn't go away. Is this part you are talking about, part of the power supply? The problem is so random, it almost feels like I'm chasing a ghost.

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