Trackball on Blackberry Curve not working properly

Debris gets stuck under there. Get a can of "forced air" blow it on there while rolling the ball. If that doesnt get it out.. There are youtube videos on how to take the trackball out and clean it, but be careful. The 1st time I did that, I broke a lil prong off the housing trying to get it off.. and some of the parts are very tiny, and try to roll away. So be cautious if you go that route.

Pry the ball chrome cover off and clean with alcohol.

Use a alcohol swab and gently rub it over the trackball. Rub it and roll the ball.. Eventually this cleaned the ball and it worked perfectly!!!!

Hi, to change the trackball or trackpad sensitivity of the BlackBerry smartphone, complete the following steps:
1) On the Home screen, go to Options > Screen/Keyboard.
2) In the Trackball or Trackpad section, click Horizontal Sensitivity or Vertical Sensitivity to change the sensitivity level.
3) Press the Menu key and select Save. The new sensitivity levels are saved.
A higher sensitivity number indicates a higher sensitivity level for the trackball or trackpad.
The trackball user interface found on certain BlackBerry smartphones is similar to the trackball used in a mouse in conjunction with a desktop computer.
In the event debris comes in contact with the trackball and affects the usability of the BlackBerry smartphone, rapidly roll the trackball up, down, left, or right to potentially correct the problem.
If rapidly rolling the trackball does not correct the problem, please contact your wireless service provider for support options.
Try to re-install the BlackBerry Device Software using the application loader tool, before you re-install the software please back up the BlackBerry smartphone data.I hope this information will be helpful to you

Hi. BlackBerry smartphone trackball fails to roll in a particular direction because, debris is lodged in the trackball.
The trackball user interface found on certain BlackBerry smartphones is similar to the trackball used in a mouse in a desktop computer.
Using for certain period debris comes in contact with the trackball and affects the usability of the BlackBerry smartphone, rapidly roll the trackball up, down, left, or right to potentially correct the problem.
If rapidly rolling the trackball does not correct the problem, please contact your wireless service provider for support options.
I hope this information will be helpfull.

The trackball pins need to be cleaned if that does not work then replaced the trackball.

www.fonlogix.us is a good place. See the link below.

http://www.fonlogix.us/BlackBerry-Trackball-_c_244.html?gclid=CL-d0KS2q5sCFQk_agodVn7zAg

It is a very common problem. You just need a new trackball. Should be about $25. If you want to make it work temporary, then just removed it and clean the trackball and the phone part under it (on the phone itself) with 99% alcohol. It might work for a while again

First how bad troubleshooting by manufacturer-sellers is! Not a word on this. Second, third and fourth, always use with case, no pockets, no bottom of bags; use with clean hands; and, clean very carefully with cotton swab mildly moistened with nail polish remover (from your favorite woman, mine gave me the idea), and then very carefully clean ball with it and wipe with dry swab. Tatahhhhhhhhhhhhh TManning

Usually the clips of the chrome ring break and don't snap back into the frontplate. There are :<a href=http://www.portatronics.com/guide/Smartphones-Repair-Guide/>Blackberry Curve Repair Guides</a>online that show you how to disassemble the Curve, if need be.