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Red Colour Disappeared

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I was using my computer when all of a sudden the screen kind of flickered and then the colours changed. The main problem is that the colour red is no longer working, which makes the entire screen show shades of grey, blue and yellow. I checked the driver (which someone had suggested) and it says that it is correctly working. I didn't bump the computer, and I'm pretty sure all the cables are fully plugged in. Help!!
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You didn't say whether it's a traditional CRT monitor or a flat TFT type. If it's a CRT, the red colour gun inside has packed up. Repair is not feasible - it would cost more than a new one. If it's a TFT monitor I can't help cos I'm not familiar with that technology.
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that would be my suspicion as well. CRT's use the same general technology as a common TV set, RGB (Red, Green & Blue) color guns. Your monitor should have some buttons on the front for set up. One of those is probably color adjustment and you can see if there is any adjustment on the red. This would enable confirmation that the red gun died. CRT's are low in cost. Get another one.
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