Protron PLTV-32 Television "lcd screen went black 2005" Questions

LCD model 42DPC85 that when we turn it on everything is good except the whole screen is black but imediatly the colors dot by dot start making the black disappear, it only took about 5 minutes for the

LCD 1080P TV. Hope to get a couple of more years out of this Vizio. One line I found has a general example of LG/Vizio repair manual. Not exact, but close enough...http://www.scribd.com/doc/7580885/LG

...screen goes black and sound leaves too! Will come back on in a few seconds...but continues this cycle. The green light stays on. Purchased the TV from Circuit City 9/5/2005. Have not had any problems ...