Re: Has a shadow on picture. Red, Green is not alligned
You need to set your convergence. Check your owner's manual on how to do it. I'm not sure the exact procedure on that model, but usually you can find it in the setup menu of the tv. What you're trying to do is line the red and the blue up perfectly with the green so that they all blend together to give you one picture.
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This set needs a fluid change. Between the face of the picture tubes and projection lens there is a layer of coolant fluid. The fluid has turned a milky brown color and is degrading the picture. The tubes have to be removed in order to do this properly. I would suggest you contact a repair shop and have them check it out for you as this can be very complicated. Thanks for using fixya and I hope this helps you out.
Check settings first to make sure no one changed anything out of the ordinary. Are the shadows that of a color or darkened shadow? It could be out of convergence, which can be corrected in the menu - or it could be low quality video cables to. Also, if there is no green, does a white color show up when you're in a menu mode (Red+Blue+Green = White Image)? If so, then the green picture tube is working and it's just a color adjustment, otherwise you may have to invest in a new green picture tube.
If the images are different colors (red,green,blue) then the convergence has diverged. Some TV allow re-convergence through the menu screen, older sets my need to be physically adjusted (aimed) to clear this up. a strong knock to the TV may have cause this.