My ball was sticking several times per session. Thought cleaning inside might help (much cat hair ). Took all the screws out of the back and nothing opened. Didn't want to pry with brute force and damage the ball. How can I get the back off to clean ??
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Re: Logitech 4 button trackball,
I love this trackball mouse, yet they are very sensitive to wear and trash that causes them to fail. Wal-Mart sells great ones like the Logitech LX3 optical mouse that are not as sensitive and have more features
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You don't need to disassemble it - Under the mouse is a hole, through which you can see the trackball. Insert your pinky (little finger), or the top (eraser) of a pencil, and gently push. The ball will pop right out, and you can clean it, and the three ball-bearings on which it rolls. I do this almost every day. (yes, my hands are clean, but normal oils gum up the ball-bearings.)
1) Can you try the mouse in a different machine? Does it do the same thing? 2) Check your settings in 'SetPoint' software, or go to your Control Panel and check your mouse settings - you may have accidentally changed the settings for your mouse keys somehow.
Background: I have a total of six Logitech trackballs; four of the newer Trackman Wheel model, and two of the older Trackman Marble+ model (as pictured). All but one of them suffer from the problem described by dave48. The fifth, for some mysterious reason, never has this problem.
Solution: The solution I came up with is to light a candle and let melted wax drip onto the red thumb ball. A single drip falling on three random places on the ball usually does the trick. (The wax should dry as soon as it contacts the ball.) I then start moving the ball around to work the wax onto the teflon points. The movement will be VERY rough initially, but will gradually smooth out the more you use it. Sometimes the initial three drips aren't enough and the ball starts getting rough again, so I will melt three more drips of wax onto the ball and work them in as well.
Conclusion: This really seems to do the trick and for some reason the points don't seem to need cleaning as often either. You do have to be careful not to remove the wax when performing a cleaning, however. But if you do happen to remove some wax all you need to do is melt some additional wax onto the ball and work it in like before.
the circular disk that surrounds the trackball and has a little raised part can be turned to left - take it off and ball will fall out- inside are 2 tiny black rubber wheels one to left and one south of that- clean with alcohol on a cloth 9 not soaked) - I scrap them with my nail going across & you'll see gunk come off. Slso turn it upside down & tap it so all dirt inside falls out. wipe all around inside with cloth. Then clean the circle that holds ball. It has to have no dirt on inside area. Clean & dry ball- put back together and make sure to turn the circlular disc till it points to the dot on top. If that gets turned just a little off center it will cause ball to go all over. I've had mine for years & won't part with it. Can't stand chasing a regular mouse around the desk.
A lot of trackball controlls made by Microsoft and Logitech use a optical system. Once the control on the screen doesn't move anymore, you simply remove the ball and clean the optics out of it.
If there is a way that you can remove the ball out of the control, all you have to do is clean the rollers underneath the wheel. After some time they do build up just like a friction mouse does. All it takes is some Qtips and a water alchohol solution.
I would hope for a kid trackball they made that a feature.