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Daewoo GB2898ST The colours have gone funny. The middle of the screen is a blue circle, then outside it is a green ring and at the corners it seems to be yellow.

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The problem is in your degausing coil and its circuit. probably it wont start every time you turn on you TV.

Posted on Apr 25, 2008

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Monitor colour is ok in the middle circle and on right side it seems to loose the red colour and on the left it seems the green colour is missing.


The CRT has likely become magnetized. On the monitor's main menu there is a "degauss" option. It is the option depicting a horseshoe magnet. Select that option to degauss the CRT, and the color distortion should clear up. If it improves but does not clear up entirely, degauss the CRT again. Is the monitor situated near a magnet (such as a speaker, a subwoofer, or some other source of magnetic field)? If so, either move the monitor away from the magnetic field source or move the magnetic field source away from the monitor, then degauss the CRT by selecting that option from the main menu on the monitor. Was the monitor dropped? If so, a series of electromagnets at the back of the CRT (called the "blue lateral") may have come loose. This is somewhat challenging to align and is best handled by a technician.

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1 Answer

Sony wega 28 inch colours wrong, circle on screen


It sounds that there is some magnet near by TV that is affecting picture tube. Please remove any extra speaker or any thing that has strong magnet inside, unplug TV for 20-30 minutes, replug back in, turn it ON, hope that will solve your TV problem.
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Thank you for your reply. I have since had my TV repaired by a local engineer. The TV needed a new part to restore the colour.
Helen Shaw

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1 Answer

Blue colors appear greenish in middle third of screen...there is a circle of yellowish green in the center of the screen


You have a bad optical block, the block has a 2 year warrnty but you will have to pay labor to have a tech change it

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1 Answer

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Can you post a picture of what your screen looks like? I may be able to help you if I can see whats going on in a photo.

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2 Answers

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your problem is simple it is called colour patch. it is basically due to change in direction or you must have shifted or tilted. it might be due to magnetic effect like spkr,telephone near by it.just remove from that location. put of the set for 15 minutes &put it on .problem will get clear. ask tv tech. to degauss it by dega.coil.it hardly 1 second job. regards

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1 Answer

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Sounds to me like a bad picture tube with circle rainbow like colors.Good luck.

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