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Colour distortion The colour on my Ferguson TV has distoted. I have a big yellow circle in the middle of the screen and red comes up as blue etc.

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Re: Colour distortion

Your screen mask may have become magnetized. This will require that you have the CRT degaussed. This is done with the use of a degaussing coil. you have to stand about 10 feet from the TV with the coil held vertically and moving it in a circular pattern as you walk towards the tv. Once you are about 1-2 inches from the TV stop and continue the circular pattern for about a three count then backup from the tv still using the circular motion once you are about 10 feet from the tv turn the coil to a horizontal plane and move it away quickly and turn it off. This should degauss the TV and remove the color distortion.

You will need a degaussing coil to perform this task.

Thank you,

Posted on Nov 27, 2007

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This sounds like a degaussing (named after 19th century scientist Carl Friedrich Gauss) problem. This usually occurs one of several ways:

1. The TV fell down and went "boom".
2. Junior held a magnet up to the screen when you weren't looking.
3. There is a large, unshielded speaker near the set.
4. The TV was rotated in relation to the North/South magnetic poles of the Earth while it was running (yes, really).

All televisions have a degaussing coil built into them which is activated momentarily every time you turn on your TV. This typically will cure all minor anomolies over the course of a few days. However for a severe one like you have, it will probably require a trip to your friendly repair shop. I, personally, do not charge anyone to perform this service because it takes, literally, 5-10 seconds to degauss a TV. I simply ask them to remember me next time they go to buy a new TV or need service work. I can't say that your technician will do the same.

In the case of the first instance of the TV falling down and going "boom". If it fell with enough force to warp the shadow mask built into the picture tube, then all of the above information means nothing. The set will require a picture tube replacement to cure the problem.

Hope this helps,

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