Ravi K

I notice a problem on my TV sometimes, usually on black and white material or if there is a large light colored blank space in the picture. I sometimes see a slight greenish tint to the picture that last a second or two. Could this be caused by having the stereo speakers too close to the TV or is it something else?

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Allan Jayne

Could be gray scale tracking problems, not always correctable. That means, depending on the level of gray, there may be a slight tilt of the tint to pinkish or greenish or whatever.

Also some persons perceive a slight coloration depending on the length of time the bright highlights in a picture is on the screen. Someone actually tried to invent color television in the form of having the consecutive black and white video frames altered to deliberately produce flicker. For example every third field might have the highlights in an otherwise still scene darkened. Viewers then tended to see portions of the picture appear reddish or greenish.

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Jack Briggs

Ravi, move those speakers farther away and see if the chroma distortion is still there. You should never position nonshielded speakers too close to your display; the resulting damage could become permanent.

Usually, speaker-induced chroma distortion results in splotches of discoloration in one of the picture's corners -- and gradually becomes larger over time. An inaccurate grayscale results in an overall tint that skews either to the blue or the red.

ChrisWiggles