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Good Morning, I sure hope you can help us. My husband was up this morning watching our Vizio TV model #SV420XVT1A when all of a sudden the screen went white and there was this loud noise. My husband tried to turn the TV and the cable off via the remotes but they would not work so he flipped the power button on the surge protector to shut everything down. He waited a minute and turned everything back on but only the cable box would power back up, not the t.v. Please advise...

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Posted on Jan 02, 2017

  • 790 Answers


did you hear the sounds? or maybe you have defective power source in hot side..

Posted on Oct 02, 2007

  • 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

  • 1 Answer

SOURCE: thinking about buying a used Vizio 42"

Don't buy it. VIZIO is not standing by their products.

My GV42L had issues from the ssart and now it shows No Signal and shuts of in 2-3 seconds. I read many similar issues on this site with VIZIO.

Posted on Aug 18, 2009

  • 13 Answers

SOURCE: VIZIO TV Black screen. Cannot turn off TV without unplugging.

I had a similar problem after having a Vizio for 2 and a half years. I left the room for a minute, i came back and the screen went black. I didnt hear an arcing sound though. There was still power to the unit and you could see that the back light was working, just no picture, no sound, and you couldn't use any of the buttons. The only way to turn it off was to unplug it. It would then start up, with the Vizio logo going from orange to white, and then do the same thing all over, no pic or sound. I would check the ceramic fuse first on the board that gets power from the plug.

HOW I FIXED MINE: I ordered a new "main PCB" from (you can also use This is the circuit board with all of the inputs on it (hdmi, cable, etc.) I opened it up, disconnected the old one, put in a new one and now it works fine.I used both serial numbers on the board to search for it online. It cost me $144 to do it, but that's better than $450 for a new TV. My tv is the vx32l hdtv10a. I hope that helps.

Posted on Jan 22, 2010

  • 347 Answers

SOURCE: I just purchased a Vizio

this tv has built in surge protection that is why

Posted on Mar 01, 2011

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