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It means that either a wire got pulled out or you are trying to feed the TV a format it cannot handle.
What's the model number?
How do you get TV, is it cable, satellite, or antenna?
If cable do you use a set top box or does the cable come from the wall and screw into the connector on the back?
Do you have any other sources connected to this TV, like a DVD player, and if so, does the problem happen with it?
Does the DVD player work?
Is the cable box connected to the TV via the red-green-blue cables?
Then what you probably have is a defective or loose green wire from the cable box to the TV. ONly a green wire problem would cause this. A problem with the red or blue wire would cause poor or no color.
The only other thing it might be is if the cable box is delivering 720p to the set, and not 1080i (depending on the model of the set).
Hope that helps, let me know if you need more help, and thanks for using JustAnswer!
Are you saying you have the cable box coax output going into the screw on connector in the back of the Mits? I thought you said it was connected to the TV via the RGB cables??
If so, and green wire is NOT connected, then that's exactly what the TV would do.
I asked you:
And you said yes.
So, no cable box in your system, the cable TV wire comes directly from the wall to the screw on terminal on the back, correct?
And the DVD player does not work, it shows a blue screen only, correct?
I also need to know the model number of the TV, it starts with WS, or WD, or WT.