Logitech Signature M650 left click not working

Question

Logitech Signature M650

Repair guides, disassembly information, and troubleshooting for the Logitech Signature M650 wireless mouse. Identifiable by part numbers (P/N) 910-006250, 910-006251, and 910-006252.

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Horenus Dessalegn @horenusdes18914

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crwdns2931729:0crwdne2931729:0: Nhl 16, 2025

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Logitech Signature M650 left click not working

Why is the left click on my Logitech Signature M650 mouse not working properly? I have to press it harder than usual or force click for it to register. What could be causing this, and how can I fix it?

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Kumar Ankush @ankushfixit crwdns2934065:0crwdne2934065:0: 13 1 · Answer 1 · 2025-10-17T13:34:42-07:00

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Kumar Ankush @ankushfixit

crwdns2934065:0crwdne2934065:0: 13

1

crwdns2931729:0crwdne2931729:0: Nhl 17, 2025

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Yup, same problem. Disassembled it. Tried to directly press the button underneath slightly, which is just right for my use - doesn't register. Have to press it harder. The disassembly process is just like M550 (on Youtube), but be careful of the extra twisted wire for LED on the top shell on the M650.

So far, finding the switch for the 'SW1' has been unfruitful. Will update if I find anything.

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There are many on Amazon or AliEx. Search for phrases like:

Silent Mouse Button Switch 6*6*7.3MM Square Microswitch Two Pin

The switch is 7.3mm tall, and 6mm (or 6.2mm) square.

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polishbroadcast @polishbroadcast crwdns2934065:0crwdne2934065:0: 13 1 · Answer 2 · 2025-10-30T10:47:35-07:00

The switch failed. You can find the part on Amazon or AliEx. Search for phrases like:

Silent Mouse Button Switch 6*6*7.3MM Square Microswitch Two Pin

The switch is 7.3mm tall, and 6mm (or 6.2mm) square. You will need a solder sucker or wick, and to remove the board from the shell (4 screws and carefully pry out the battery contacts). The switch is held on by its own 2 pins and is easy to remove.

Getting in to the mouse is pretty easy. Start with these two screws inside the battery door. Then gently separate the mouse from the back. There is a clip near the front so you have to kind of slide the bottom forward to release it.

Remove the main cable

Remove 4 screws for the PCB & scroll wheel (scroll wheel comes off separately)

Remove the battery terminals by gently pulling up the whole PCB. Don't bend or stress the battery wires.

Use a solder-sucker to remove and then resolder with new switches for the left and right mouse button. .