Symptom: Logitech wireless laser mouse displays a jumpy cursor when moved in any direction.
Problem: laser diodes were covered with dust
Solution:
Wetted one end of q-tip.
Used wet end to thoroughly clean the lasers.
Used dry end to dry the lasers.
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Trivia: I had no idea the fix would be so simple. First I tried turning mouse on and off, resetting it. Then I opened up the mouse to check for dust -> the inside was very clean.
Then I tested the voltage of inbuilt rechargeable battery -> 3.7V
Sticker on the mouse read "Rating: 4.2V", so I put together 3 x 1.4V used AAs -> cursor was still jumpy.
Googled the problem, got the "q-tip cleaning" idea from here:
http://www.techsupportforum.com/forums/f25/mouse-pointer-twitches-jerks-and-sticks-no-matter-the-mouse-453313.htm
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