Logitech Mouse MX Anywhere 2 microswitch Replacement

Introduction

The MX2 suffers a similar fate to the first MX series of ghost clicks after a year or 2 of usage. This is due to a faulty microswitch that needs replacement.
I found Omron D2FC-F-7N(10M) switches inside and decided to replace the left one only for now.

This forum post was very useful in understanding the Omron switch naming convention. I am attaching a pdf print-out of the post in this guide, in case the post/forum vanishes.

I replaced my fault switch with an Omron D2F=01F made in Japan. Living in India, I managed to order it on tanotis.com.

What you need

Step 1 Open the mouse from the rear

Logitech Mouse MX Anywhere 2 microswitch Replacement, Open the mouse from the rear: step 1, image 1 of 1

There are 4 screws hidden behind the pads. Using a blade or a small flat screwdriver, gently peel away each pad and using a phlips #1 screwdriver to remove each screw.

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Step 2 Disconnect and unscrew the battery

Logitech Mouse MX Anywhere 2 microswitch Replacement, Disconnect and unscrew the battery: step 2, image 1 of 2

Logitech Mouse MX Anywhere 2 microswitch Replacement, Disconnect and unscrew the battery: step 2, image 2 of 2

Once the mouse is opened, you need to disconnect the battery, the small white clip at the top of the photo.
remove the 3 screws holding the battery (circled in blue on the photo) using a philips #0 screwdriver.
you can the lift the battery out.

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Step 3 Unscrew the earthing wire and front screws

Logitech Mouse MX Anywhere 2 microswitch Replacement, Unscrew the earthing wire and front screws: step 3, image 1 of 1

remove the 3 screws circled in blue

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Step 4 Remove the wheel

Logitech Mouse MX Anywhere 2 microswitch Replacement, Remove the wheel: step 4, image 1 of 3

Logitech Mouse MX Anywhere 2 microswitch Replacement, Remove the wheel: step 4, image 2 of 3

Logitech Mouse MX Anywhere 2 microswitch Replacement, Remove the wheel: step 4, image 3 of 3

Start by removing the 2 screws holding the plastic bridge, circled in blue in the first photo.
remove the lone screw on the front of the wheel (circled in yellow on the 2nd photo)
You can now lift the wheel assembly out, making sure you also take the front black plastic screw guide with it.
NOTEL there is also a spring attached below the wheel assembly.

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Step 5 Unscrew the final circuit screws

Logitech Mouse MX Anywhere 2 microswitch Replacement, Unscrew the final circuit screws: step 5, image 1 of 1

There are 2 more screws holding the circuit board in place (circled in blue)

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Step 6 Desolder and replace the faulty click switch

Logitech Mouse MX Anywhere 2 microswitch Replacement, Desolder and replace the faulty click switch: step 6, image 1 of 3

Logitech Mouse MX Anywhere 2 microswitch Replacement, Desolder and replace the faulty click switch: step 6, image 2 of 3

Logitech Mouse MX Anywhere 2 microswitch Replacement, Desolder and replace the faulty click switch: step 6, image 3 of 3

Tool used on this step:

Desoldering Pump

$3.99

Buy

The click switch as 3 pins (boxed in red). I replaced the left button mouse switch only as the right one is still working.
I had to prime the solder, by adding some fresh solder to each pin in order to get the circuit solder to melt and loosen the pins.
I clamped the board and used a small flat screwdriver as a lever below the switch to gently pry it away while I heated each pin.
I used a desoldering pump to clean the circuit holes
the original Omron switch is made in China, and I managed to find one made in Japan, hoping for better life-time.

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Step 7 Reassembly

Logitech Mouse MX Anywhere 2 microswitch Replacement, Reassembly: step 7, image 1 of 2

Logitech Mouse MX Anywhere 2 microswitch Replacement, Reassembly: step 7, image 2 of 2

Follow the steps 1 to 5 in reverse order to reassemble the mouse.
Take care when placing the wheel assembly to insert the from screw guide (the small black piece) first.
align the rear so that the wheel switch sits on top of its mount.

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Conclusion

I compiled this guide with my fixed mouse which works like a charm again. The MX Anywhere is a great mouse for travelling and I hope to get many more years of service from it.

7 other people completed this guide.