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Green dots throughout the picture means the LCD is bad so unless your Vizio TV is under warranty then you would have to get a new TV cause the cost of the screen would be more then you paid for the TV.
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if you remove the rear cover you will find 3 large lens----with the set on cover the red and then the green one at a time, if the dots vanish you have a "burnt" picture tube caused by some problem in the set---it is permanent damage and not only would the picture tubes have to be replaced but whatever arced and burnt them would have to be located and repaired.
If the dots go away it is most likely not worth fixing.
If the dots are red and green, that's normal. Just enjoy your hd picture. actually, I think the dots make it look clearer. The only time I can really see them is when the screen is black.
If you have the remote, go to the setup screen and move the picture. Converge has nothing to do with where the picture sits but, where the red, blue & green dots land. All you should see are pure white dots. There should be absolutely NO color ghost anywhere on the screen. If so, you need a bar / dot generator to set the convergence to center the dots.
As the others said, there are the two settings. I had a similar problem, then realized how it worked. You need to not press very hard while it focuses first. Then you can press all the way down, if you hold it all the way down, it doesn't recognize that you've already passed the first "Focus" pressure point and gone into the second "Capture" pressure point.
from the model number you have a 42" set,,the v_set and v_scan voltages need to be set 15vdc lower..this should take care of it,,if not then the plasma panel is bad
The green dot in the center sounds like a burn mark on one or more of the picture tubes inside the set, and the curved lines are telling me that you have a problem in the convergence circuits. The blue haze around everything white tells me you either have a lot of dust build up on the lens over the CRTs, or your picture tube(s) are very weak. If this set is over about 12 years old, I would replace it. I doubt if you will be able to get the green dot out of the picture without changing the tubes which would be VERY expensive.
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