Vizio XVT473SV Power On problem

[Audioplus]

Unit 'V' led flashes Orange, then White, Vizio Logo appears on screen momentarily, then shuts down .
Main board?

[hienton2]

Re: Vizio XVT473SV Power On problem

This series is very tough. I have one same problem. Change main It run one day and do the same.

[tvtek]

Re: Vizio XVT473SV Power On problem

i HAVE ONE WITH NO +18V. NO +12V, ONLY HAS +5V ON PS. Help please. John

[budm]

Re: Vizio XVT473SV Power On problem

i HAVE ONE WITH NO +18V. NO +12V, ONLY HAS +5V ON PS. Help please. John

Same TV model?
Please upload good clear pictures of the backside of the TV so we can see how all the boards are connected together.
Your problem sounds like the main board is not sending the PS-ON to turn on the rest of the power supply circuits.

[ecking767]

Re: Vizio XVT473SV Power On problem

This main board XVT473SV, along with M470nv, m550nv and XVT553SV all seen to fail from bad firmware and HDMI chip going bad.

The HYNIX H27UAG8TMTR (2GB) which hold the firmware develop bad block over time and need to be reprogram to correct this bad data.