Microsoft Wireless Optical mouse 2.0 Sticky central wheel
I just took mine apart to fix same problem, works much better but not sure for how long.
Quite simple to dismantle the unit.
Take the battery cover off, remove batteries.
There is a small screw in the middle of the battery cavity, you will need a very small Phillips head screwdriver.
Gently ease the base (holding circuit board) from the top shell
The wheel unit can be gently eased out of its cradle, use the small screwdriver to pop it out, watch out for the small spring between base and wheel unit, don't lose it
You can disconnect the wheel unit from the circuit board by unhooking the small plug connector
Now defluff, then clean the wheel - I used a tiny amount of turps on a cloth, anything similar should work. If you look closely the reason the wheel won't roll smoothly is that the gel ring on the wheel is too close and rubs at the front and back of the cradle. Once grime builds up, this problem makes the wheel unusable. Roll the wheel back and forth along a clean surface once cleaned, should start rolling freely again.
I also unscrewed the top shell from the mouse buttons (all one piece, pinch the plastic pegs in the centre of the shell together to release) and cleaned the whole unit up before putting it back together
Don't forget the spring when putting the wheel unit back. When screwing the base to the top shell make sure there is no play between the two parts before you put the batteries back in, mine was a bit tricky to get tight again but worked fine second attempt
Sep 07, 2008 |
Microsoft Standard Wireless Optical Mouse