Question about Vizio VW42LF 42 in. LCD HDTV

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Hello, it's been a year working on this tv now. We had an electrical storm and the tv wouldn't turn on anymore. Even the led vizio light on the front would not turn on and there was no power l

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  • Jonkyle Jan 10, 2013

    Update. I can make the TV stay on now however there are vertical color bars across the screen. The bars eventually do fade and the tv and backlights stay on. Still no picture or response when i push any button except power.

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  • Vizio Master
  • 933 Answers

Is there any sound? Did you order the exact main board part # as your original board?

Posted on Jan 11, 2013

  • Jonkyle Jan 11, 2013

    I did order the same main board (3642-0502-0150(A)). I put substitute inverter boards in and my backlights work great, but the inverter boards would not have caused this. The only sound is just the normail very faint humming of the backlights and the power board and very low volume static from the speakers. i tried to connect one of my old dvd players to try to get sound however i don't think the one i used will still spin a disc and i can't remember how to blindly change the source input if i can not see the screen. I thought it may be a bad lcd screen (i hope not) however these are very wide vertical bars not the usual pin thin line you would normally see from detached tabs.

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Posted on Jan 02, 2017

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SOURCE: Vizio L37hdtv10a fails to fully turn on

You will have to isolate the main board and Inverters.
Unplug the inverters and turn on the set.
If it "turns on" then try re-connecting each inverter seperately to see if only one is causing the problem.

Posted on Mar 07, 2009

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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 avatar1.jpgmeg_car on Jul 08, 2009



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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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.

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