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Apple Wired Mouse scrolls in one direction only

Using the wired mouse with Apple aluminum wired keyboard and iMac 2009, OS 10.6.6.

When I use the scrolling button on top of the mouse it works fine for scrolling DOWN, but not at all for scrolling UP. I has worked fine for a couple of years.

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  • Best Answer

    It's dirty and needs a good cleaning. I know because I just finished doing this due to the exact same problem. Things you'll need: rubbing alcohol pads, cloth napkin or something similar and a straight pin or similar small, rigid instrument. Roll the ball around on the alcohol pad for a bit to loosen up all the gunk. Turn it upside down and roll it around on the napkin. Look at it a lot to see if there are particulates you can pick off. After you've done these two steps over and over, it still might not work. That's when you jam the straight pin in between the plastic housing and the roller ball. Dig around in there and pull out even more gunk. Repeat the alcohol pad and napkin thing. Just keep doing these things until it works. It took me about 20 minutes of cussing and cringing, but it finally has 360 degrees of scrolling again.

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  • There is no permanent solution to this issue. You can try cleaning the track ball by turning the mouse upside down and rolling the ball on a clean piece of white paper. However, this is only a temporary solution. Bottom line is that this is just a poorly engineered product.

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