We have a 47 inch Vizio, Blue shadows

Do the flashlight test and if you see a faint picture the backlights are not working replace either the led backlights or T-con board, If no picture replace the main board.

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

If your tv has a custom settings area, first turn all color down on set so picture looks black and white. Now in color settings look for red blue and green color bars. Use the bars until the picture looks as true to black and white as possible. Also, try changing color temp.

i am having the same problem and my power light wont even turn on so i think it might be tht power fuse. Is tht what was wrong with urs?

The tv have a problem known as a convergence problems,it dead.Any colors lines R,G,B mis alignment,have 3D pictures or colors shadows.The tv convergence board it dead.Require changing 2 STK convergence ICS and some or all it resistors to solved convergence problems.The shop,will cost u $300-350 for parts and labors.

Hi;
Have the digital board replaced, it might also be a good idea to replace the main board at the same time. Have a technician check the VS and VA and VE voltages to the y-Substain board also, on most plasmas there are small variable adjustments knobs that control these voltages some times this porblem can be resolved by adjusting the voltages.

I work as a Contractor for Vizio repairs, and I can tell you that the only solution is to replace the motherboard, or if under warranty REPLACE IT! I have had situations when I replace Motherboard and within 2-3 hours the TV is making either Green, Red, Or Blue pixels where dark areas are. If under warranty don't accept any thing but a full replacement.

replace stk 392-110 ( or stk 392-150 same number) , check resistor 2.2 ohms for open or burn beside STK IC's

Hi,
I work as a contract technician for Vizio, and I can tell you from experience that replacing motherboard is one of the only solutions to this problem. The other solution if under warranty is to replace it. If you experience red, blue, or green pixels where dark shades (like nose, eyes, clothes, etc), call Vizio and accept nothing less than a full replacement! I have had situations where I replaced motherboard and within 2-3 hours the pixels return. Hope this helps.

TV shows large red spot in middle of tv when dark show are on, you can see it more.  Now blue spots on upper right side too.  Spend way to much on this tv to have these kinds of problems only after 3 yrs.