Also, the tip about removing the magnet – this helps alot. The only thing I didn’t find in there was a small child…. Surprisingly, I didn’t find much crud at all.ĪWESOME! My mouse (er…trackball) purrs like the kitten of the cat hairs that were so deeply embedded inside it (for any of you considering this and saying ‘Naw, I clean out under the ball lots – it’s fine’ – Um, it’s probably not – especially if you own pets. Remove two screws from the ball socket, pull it off, and clean any fuzz from the openings.Remove three screws from each of the two button cap assemblies and pry the button caps off the case bottom.Peel the four rubber feet off the bottom, remove four screws, and the top half of the body pops off.Tip the ball out into your hand and put it where it can’t possibly roll off the desk.The silver bar to the right of the emitter is the magnet that provides those soft detents. The top photo shows the infra-red emitter adjacent to the scroll ring’s slotted rim. It’s an optical device, so I suspected it had ingested a wad of fuzz that blocked the beam path. Recently the scroll ring has become balky, stuttering upward & downward rather than actually scrolling. There may be no good fix for scroll ring problems. [Edit: a comment from the future compares it with a different trackball that may work on the right.Īlso, search for Kensington scroll to find other posts. The oddly named Kensington “Expert Mouse” (it’s a trackball) sits to the left of my keyboard, where it serves as my main pointer controller I’m right-handed, but have used a left-hand mouse / trackball for years.