Designer Bluetooth Mouse Scroll Wheel Malfunction

and where is it possible to find a replacement of wheel?

I also have this problem.  Was in the middle of scrolling and the tactile clicking in the mouse wheel rotation suddenly stopped and scrolling no longer works.  I am at just under a year and will see what Microsoft will do about this.

> SOLVED LIKE A CHARM <

Hello,

I bought the Microsoft Modern just about 11 months ago.

And yes, about 20 minutes ago the same things that's been described here that demonstrates a huge design flaw happened to me.

I was scrolling my way until all of a sudden the scrolling lost the grip, the wheel just went round and round away without any kind of feeling or click.

First I followed the first instructions I found to disassemble the mouse (https://www.youtube.com/watch?v=V4-oaCAv-i0)

Its very very easy... just lift the upper cover starting from the left mouse button and work your way to the back side and then to the left mouse button.

Under there you need a number 5 star shaped screwdriver (technical name is written around here somewhere) which I happen to had, and then after taking apart the board and the wheel, the gluing process I followed was:

1. Place a drop of super glue (in my case I had Lanco Instant Glue) on top of a cardboard (or any paper you can discard later)

2. With the drop of glue laying on top of the cardboard or paper, carefully grab the wheel and gently tap the broken end of the axis to the glue. Then move the wheel away upward making sure that no string of glue remains hanging around, any tiny string of glue could ruin the rolling surface of the axis.

This will result on just the tip of the axis being covered in super glue, and nothing more.

3. With the board separated from the base of the mouse, carefully insert the tip of the axis on its socket, let the other end of the axis rest on top of the middle mouse button, and after pressing in the socket for a couple of seconds, place the board and wheel on the base of the mouse again. You can wait about 20 seconds here to let it dry. Press the wheel like if you where pressing the center mouse button to make sure it feels firm.

4. You are done!, screw the board to the base of the mouse, put the batteries on, and you can try the mouse working.

I only took a picture on this stage (sorry), this are the materials I used, and just in case I marked the end of the axis you need to glue :P

After that I reassemble my mouse, and it works just like new, same feeling, same responsiveness.

Hope it helps!

I wish I had done some research on these. My wheel stopped after three months and I of course did not keep any paperwork. It seems to me the best solution is if you do not have the tools or expertise to glue or tape the wheel (Seriously? That is the fix?), or the desire to do all that, is to put the "Designer" mouse under the wheel of your car on the way to the store to buy a Logitech mouse. Take the batteries out first.

Nice idea - two things: 

1. I don't think I suggested 'tape' ?  I gave a detailed account of how to open, remove and replace the wheel, similar to the one above.
2. It 'happened again' that the wheel sheared off (I dropped it :(( ) so this time, being an engineer (engine-err?) I decided not to replace the wheel but add to the wheel what it didn't have - a steel spine. 

I drilled a small hole in the shaft and in the wheel and inserted a piece of straight steel wire.  I then used epoxy to bond the wheel and the shaft together. 

So far, I have not had to resort to Logitech.  If I drop it again - I fully expect that the wheel will not break, but I cannot predict what the next weakest piece will be :).  I will let all ya'all know when it happens.

Thanks for following up.