Last week the left mouse button of my beloved Logitech M500 laser mouse stopped working correctly. The mouse is several years old and used daily for several hours, so there is no reason for me to be unhappy with it’s endurance. But replacing a mouse, because of a single worn out switch, felt like a waste. That’s why I decided to repair the mouse.
Unfortunately I could not find a service manual on the Logitech support site. That did not stop me, oh no, on the contrary! I got enthusiastic and documented the process, so this will be much easier for you to repeat.
The “missing” Logitech M500 service manual
This post will show you what the inside of a Logitech M500 laser mouse looks like. It also explains where the screws are located and how you can remove them carefully. It should be possible without destroying the mouse, but I take no responsibilities for your actions. If your mouse is still under warranty – which is a generous period of 3 years – then I urge you to stop reading and contact Logitech support to get your mouse replaced.
The 4 bottom screws are located underneath the feet or “skates”. The skates are oval stickers and can be removed without too much damage by using a sharp knife. Slide the knife underneath the entire skate to peal it off in one piece. Do not fold or bend the skates as shown on the picture unless you plan to replace them. A replacement set of 4 skates can be bought on-line and cost about 5 dollars.
The cable of the mouse can easily be removed, because it is connected with a plug into a socket. Pull the plug out gently by wiggling it. You can then remove the wheel by pulling out the “f”-shaped axis (shown in the inset) that is located in the middle of the mouse (see circle). On one side it has a little handle that you can use to gently pull the axis out. After doing that you can pull the wheel structure upwards from the front of the mouse as indicated in the picture. You may need to pass a little aluminum strip that keeps the wheel structure in place.
Now we can remove the main board of the mouse which is kept in place by 5 screws that are marked in the picture. Easy ain’t it? If you need to replace a left or right mouse button switch the model is “OMRON Micro-switch D2FC-F-7N” as you can see below:
Their 3 pins can easily be (un)soldered on the main board. You can buy this OMRON micro switch on-line for about 1-2 dollar per piece.
Happy hardware hacking.. 😉