Question about Vizio M370NV 37 in. LCD TV

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Vizio logo lights up but no picture/display

My TV will turn on by switch or by remote to the point of lighting the Vizio logo and the red laser/LED on the optical cable connection. However, the LED backlight for the panel does not turn on so I am not able to see anything on the screen. No sound either but can not tell if the TV is in a mode where there should be sound. Disconnecting AC power while the TV is on yields a flash from the LED backlight indicating the LEDs work and power can get to them. No visually obvious blown/leaking capacitors on the power supply board. System may have been victim of lightning strike through cable or AC. Thanks

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Posted on Jan 02, 2017

eagle338
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SOURCE: Visio p42hd, no picture

Yes it does sound like the mainboard. But we have to confirm. I will see if there is a service manual for this unit in my collection but do you think you can safely work on it? Have you worked on electronics before? The last thing I want is you hurting yourself trying to fix it. HV circuits are not to be messed with unless you know about them.

Posted on Nov 03, 2010

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1. From the Picture Settings menu, use the
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47"Vizio model #XVTSV Led LCD


this is the only way to get rid of the orange light: l3_3_in_hdtv_lcd_television_412611.jpg
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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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