How do I repair my Logitech Anywhere MX?

Thanks, Kristian, for the tip about the battery stickers. (I suspected, but was not sure)

This is the second Logitech mouse I've had the same problem with. The microswitch is not defect, because if I dismantle the top and actually press the microswitch with my fingers it works fine.

The problem is with the underside of the button where it meets the microswitch. This plastic is softer than the microswitch and with time the microswitch grinds a groove into the button, which is when the problems start, as the switch is then not completely pressed. I glue a very thin, hard foil over this groove and the problem goes away.

I guess it's too late for the original post, but I hope this helps other people searching for a solution to the same problem.

Here's my fix, we've done 3 of these mice with this fix and it's worked each time.

The Logitech Mouse Double Click Problem and How To Fix It

The blog post with images - http://www.redferret.net/?p=31008
The YouTube video - http://youtu.be/V66Cd2Y4IPs

Hope that helps.

If you had the mouse for less than 3 years and still have the proof of purchase, contact Logitech and they will send you a new one (after asking for some minor and completely irrelevant troubleshooting). Mine arrived a few days ago. The original had a severe case of left button mushiness and would almost always generate a double-click.

Once the new one received, I dissected the old mouse, and found two screws, one under each of the sliding pads under the mouse's nose. Back of the bottom part still firmly attached after removing the screws, though.