Vizio SV470XVT1A - Displays Red Pixels and Lines

[909]

I have a Vizio SV470XVT1A and after about five minutes of being turned on it
begins displaying red pixels and red lines on dark areas of what's being displayed on the screen. It does not matter what input is used, the red pixelation occurs whether you use hdmi, composite, or external antenna inputs.

Other than the red pixel problem the TV works, ie; sharp picture, sound works, inputs all work, etc.

I pulled the cover off the back and have checked all the connectors to make
sure they were properly seated. I also inspected for bad caps and fuses and
I am getting steady 24 and 5 voltages from power supply.

From the various internet forums I have read its either the LVDS cables, the motherboard, the daughter board, the t-con board, the power inverter boards, the LCD screen, etc. I'd like to narrow it down a bit.

Please keep in mind that I am not electronics technician, but a sophisticated wire wiggler and I do have a multimeter and I can do almost anything, as long as it's explained to me in English and not Technospeak.

Any help is appreciated.

909

[texas1978]

Re: Vizio SV470XVT1A - Displays Red Pixels and Lines

Sounds like the LCD Video Processor over heated and not making a good contact, might wanna try the Coin and heat gun trick, on the Main board and LCD Video board. Would it be possible that I could get a copy of the Service Manual Please. texas1978@hotmail.com working on one with a problem not coming on, just when plugged in shows the orange vizio immediately and the 5.1 red dolby light comes on as well. No response from Power button. What happened is i tripped the breaker while it was running, tried to turn the breaker off to work on some outlets in my shop.

thanks,
Jeremy

[Livermoron]

Re: Vizio SV470XVT1A - Displays Red Pixels and Lines

I have a Vizio SV470XVT1A and after about five minutes of being turned on it
begins displaying red pixels and red lines on dark areas of what's being displayed on the screen. It does not matter what input is used, the red pixelation occurs whether you use hdmi, composite, or external antenna inputs.

Other than the red pixel problem the TV works, ie; sharp picture, sound works, inputs all work, etc.909

I have the same problem... has this been fixed? If yes, how? I am very hands on and cheap so I'll try anything myself first - just need to know what I am looking for!

Thanks