Mouse wheel not working is a very frustrating issue, this is something you have to live with every day. I decided to throw away my 2 mice A4 TECH G3-200N, and Rapoo MT750S.


I was feeling bad that this mouses was not working, rapoo is the expensive one, I thought how come this mouses has the same problem after a few years of usage so I took it as the mouse’s hardware malfunction.
After researching some websites and YouTube videos I came to know this problem is due to dirt that builds up inside the mechanism that responds to the wheel movement.
Clean the Mouse
Dust and dirt can accumulate inside the mouse, affecting the wheel’s functionality. To clean:
Turn off your mouse or unplug it from your computer.
Use a soft cloth or compressed air to remove debris around the wheel.
For more persistent dirt, gently open the mouse case (if it’s not sealed) and clean the internal parts.
So I opened up the mouse and cleaned those parts with alcohol, and it worked, thanks to these 2 videos.
Here at the bottom is my video, of how I cleaned A4 TECH G3-200N mouse and for Rapoo MT750S the procedure is the same as the mechanism is all the same for both the mouse.











