Mighty Mouse does not scroll up

I have had my iMac for about 2 weeks and now my mouse does not scroll up. The roller ball doesn't sound the same when scrolling up. Left, right, and down all seem to be working fine. Does something need to be cleaned? Can you take the mouse apart like older mice with the ball? Please help.

benorubin said:

I have had my iMac for about 2 weeks and now my mouse does not scroll up. The roller ball doesn't sound the same when scrolling up. Left, right, and down all seem to be working fine. Does something need to be cleaned? Can you take the mouse apart like older mice with the ball? Please help.

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Never mind. Just sprayed some compressed air on the ball and it is working fine. :mac:

Sounds like it could be dirty. I don't have one personally, but from what I do understand that ball gets dirty rather quickly. Just run a lightly dampened Q-tip or something over the ball to clean it.

Ive had this problem twice now and I took it back to the dealer.

First time it stopped rolling altogether and they basically turned it upside down and rolled the ball on the mousemat, that fixed it and they said to do that and maybe use a cleaning fluid.

Second time it stopped rolling downwards only and they replaced it so I guess its common.

If it wont clean then just take it back.

I have had 3, my newest wireless one hasnt done it yet, but it will in time. I got my last 2 to work by following these instructions: http://docs.info.apple.com/article.html?artnum=302417

Now they work flawlessly!