Cleaning Logitech MX Master

ID: 113126

Description: I've had my MX Master for more than 3 years,...

The mouse has four feet on the bottom, but only the two long ones need to be removed. I used the Jimmy from the Pro Tech Toolkit.
I didn't have new feet on hand, so I had to reuse the original ones. This is why there's no step for cleaning the adhesive off and putting new feet on.

Rev up those screwdrivers! The first wave consists of four PH1 and two T5 screws on the bottom.
Once those are taken care of, the mouse should be easy to pop open.

When opening the mouse take into account the position of the clamps so you won't pop more than you want.

Pop the connector open with whatever tool you find works best, unless you're like me and accidentally pulled the cable out of the connector in the previous step.

This is the part where I realize I need better lighting.
Set the top half aside for now. Removal of the battery consists of three PH1 screws and one connector that really doesn't want to come loose.

Time for a bit change! The PCB housing the switches for left and right clicks comes off with four P0 screws and another ZIF connector.
The scroll wheel assembly is held in with two P0 screws at the front. There's also a connector for the motor hiding under the ribbon cable for the PCB you just removed.
These screws aren't visible in this step, but can be seen in the previous one. I'm terrible at taking pictures.
You can see some of the debris causing my scrolling issues in the last photo.

Three more P0 screws hold this one in place.
Be careful to put the little doohickey on the red wire back in place (I can't remember the name)
We can see the micro USB connector on the underside. Unfortunately, I can't upgrade it to USB-C with the equipment I have.
I have the equipment to clean it though! A can of compressed air was all I needed.

I couldn't get the wheel out of the assembly, but I was able to spin it with some compressed air. I didn't get it on video, but a big chunk of dust came flying out.
I apologize in advance for filming in portrait mode. Also, I failed to get a shot of the debris inside the wheel.
That spring on the bottom in the first picture will probably fall off. Make sure to keep track of it.
I took the assembly apart in an effort to get the wheel out - no dice. I don't know where this oddly shaped spring goes, possibly on this peg, but I left it out and it doesn't seem to be important.