Re: Vizio XVT473SV white screen but warms up



Right on target. I got a replacement tcon board and replaced it. Voila itvworks now.
When I examined the bad tcon board, I saw the brown stains around the 2 ICs. Looks like they were the blown out but didn't check voltages.

Thanks everyone for your help on this. I really appreciate this. It gives me confidence that I can atleast troubleshoot TVs in future....

Re: Vizio XVT473SV white screen but warms up



Is this ribbon from the mainboard to the tcon?
Also across what pins should I check for the 12v?
I see that the ribbon is connected inverted to the mainboard. Is that normal?
I also see a flashing blue LED on the inverter board. Is that normal too?...

Re: Vizio XVT473SV white screen but warms up

Attached are the pics. I could not get the unit to power up. It was just cycling between the Orange and White Vizio logo.
I will try and get a youtube video later this afternoon....

I recently bought a Vizio LCD 47" TV(model #xvt473sv) off Craigslist.
When the seller demo'ed it it was fine. But after getting home, the screen was very bright with images showing up faintly. After about 10-15mins warmup everything was good. When I shut off for 30 mins and restarted it, the vizio logo turned orange and it cycled between orange, white. The tv never turned on, so I unplugged and replugged it. This time it was fine and started up ok.

I have since got used to the warm up period but yesterday the unit didn't turn on. A local repair guy looked at it and...

Re: New Members - please post your introductions here

Hi,
I am Al and an electrical engineer. Been in the Computer industry and wanted to get back into electronics. Need to start refreshing my brain...