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My vizio M470sV does not turn on. Tried the power button on the side and also the remote does not work either.



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Franco Dosil

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  • Vizio Master
  • 10,535 Answers

Hi CHARLES J KIMBALL, so you would have a problem with the power supply
Check if it has a fuse, if it has one, replace it with only one of equal value, if it is cut, this will tell you that the source plate is wrong
Try and comment
Regards Franco Dosil

Hola CHARLES J KIMBALL, por lo que comentas tendrias problema en la fuente de alimentacion
Revisa si tiene fusible, si lo tiene, reemplazalo solamente por uno de igual valor, si se corta, esto te dira que la placaq de fuente esta mal
Prueba y comenta
Saludos Franco Dosil

Posted on Oct 08, 2019


5 Related Answers


Steve Allison

  • 5569 Answers

SOURCE: Vizio VX32L No Display and Can't Power Off

Old messages and bcipollina is gonna get to read this resonse twice; sorry-
If it just fails to turn on or ignores the remote, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself. 
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.

Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.  
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.

BTW, from what I have read about Vizio, I think they are close relatives to iLo which was also sold by Wal-Mart.
Quality control anyone?

Posted on Oct 25, 2008



  • 4 Answers

SOURCE: only vizio light come on then nothing. have to unplug to turn off

there a problem on power side.. chage the ic and the resistor going to ic and check also the signal diode.

Posted on Jan 03, 2009


  • 56 Answers


For the 46" TV, it sounds like the main board is bad.

For the 50" Vizio: is the LED light on?

Posted on Feb 16, 2009


  • 563 Answers

SOURCE: Vizio VX32L The screen goes white,no response from buttons


Unfortunately, what you're describing is a repair issue. You won't be able to address the problem with troubleshooting. There is a part inside the TV that needs to be replaced. If you're under warranty, this will cost you nothing. If you're not under warranty the cost will likely be a minimum of $200 parts and labor. However, be warned that the cost could be considerably higher.

I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.

Please post a comment if you need additional assistance so that I can help you further.

Posted on Jul 28, 2009


The Knight

  • 76416 Answers

SOURCE: My Vizio Tv won't turn on

The power supply regulator board shouldbe ckecked for fault. Check the fuse. If it is found burned out, find the reson for that. Surely there will be a reson for blowing of the fuse, if it is blown up. Without rectfying it, inserting an other fuse in place, might make things more worse.

Posted on Apr 26, 2012

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