No picture or sound

Sure that the other boards you used were any good? If so, then try the Power supply board since the other boards of your set other than the main board specialize in the video aspects. Since you have no audio the only two boards that could account for no audio are the main board and the PS board which powers everything in the set.

this sounds like a main board failure but a defective power supply can mimic some symptoms of a bad main board. I would recommend you get a diagnosis done on the set. If I was a betting man, I'd guess the main board

The main board will need replacement. Its very common issue where the set will freeze at the vizio kogo then eventually it wont turn the logo from orange to white so it can power up. Replacing the main board should solve the issue. You can get the replacement main board from www.tvcircuitboards.com

The power supply board has some issues with its stand by supplies which should turn the logo orange as soon as its plugged in if the logo doesnt turn orange replace the power supply board You can get the power supply board from www.tvrepairworld.com

Sounds like a main board issue. With a black screen and no remote functions . Does the Vizio logo stay white or orange?

does the vizio logo light up orange ? If so and it doesnt turn white then the main board would be suspect. If the logo doesnt turn orange when its pluuged in then its the power board. You can get either board from www.tvrepairworld.com

Hi.
You need change the Main board. You have a micropros. problem.

this is the only way to get rid of the orange light:

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• settings
• service menu
• set
• channel
• parts
• instructions
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Problem with Vizio L32 32 in. HDTV LCD Television
how do i turn off the orange light on the vizio tv, it won't go off after the tv is turned off?

Posted by meg_car on Jul 08, 2009

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Vizio TV Repair Power supply troubleshooting Picture problem Sound problem

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Solutions (2) Best Solution That little fella is only turned off by unplugging it. If all those little lights in America could be turned off we could do with one less nuclear power plant. If unplugging it is not an option, my wife's solution is to cover it with a piece of black tape.

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• Answered by Sgt Fluffy Over a year ago
  

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remove all screws on the back of the tv, carefully pull off back cover. you will see two circuit boards one on the left (Power) and one on the right (Video) on the Video board there is a small plug on the right side with a yellow, white and red wire going into a small white connector. the red wire is what controls the orange light on the front. now that the plug is pulled turn it over and you should see a small white plastic piece that holds each metal connector on the end of the wires in. pry this piece of plastic up for the red wire and pull at the same time, the wire will come out of the connector. now tape the metal connector with electrical tape and tuck it behind something or tape it to the chassis. plug your connector back in. put the rear cover back on. now your tv will only show the vizio logo in white when you have the power on. If you wish to disable the logo for both orange and white just disconnect the white plug completely.

possibly is the main board.

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 tigerdirectparts.com (you can also use searspartsdirect.com). 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.