iFixit - Answers With Device "Logitech MX Series Mouse"

Logitech MX Master 2S: 사용중 전원이 꺼지고, 다시켜면 수분 작동 후 꺼집니다

Wed, 23 Apr 2025 04:59:12 -0700

사용중 전원이 꺼지고, 다시켜면 수분 작동 후 꺼집니다

Logitech MX Master 3S: 스크롤 휠 상태가 고정되어있음.

Mon, 08 Jan 2024 01:02:15 -0700

초고속 스크롤 휠 상태에 고정되어

래치 모드로 변환이 안됨.

Logitech MX Anywhere 3: Click is not working

Tue, 30 Jun 2026 02:14:40 -0700

Hello everyone!

Well, I have MX Anywhere 3 and I have now this issue: left side is not clicking. You need a stronger click/click in a precise spot of this side of the mouse to make the click work. I have this product for more than 5 years now. I saw there are some videos about how to fix it at home... and I am a bit afraid buying the tools/paying someone to fix it and then having the issue again...
Do you guys have any tips or instructions that I could follow to solve this problem? Have you faced this problem as well? Is really worth fixing it?

Thank you very much.

⟐ Commented 6월 30, 2026 at 2:14 GMT-7

Logitech MX Master 3S: MX Master 3S Won't Power On with New 3.7V Battery - No LEDs or Charging Light

Fri, 26 Jun 2026 05:14:59 -0700

My Logitech MX Master 3S randomly shut down and won't turn back on. I found the original battery was depleted to 0.5V. I replaced it with a new battery which is outputting 3.7V, but the mouse still shows no signs of life—no LEDs turn on even when plugged into a USB-C charger. I have verified that the interconnect ribbon cable and battery connector are seated correctly.

I have a multimeter and would like help identifying potential blown SMD fuses, bad voltage rail test points, or common failure points on the motherboard that would cause a total power failure despite having a good battery voltage.

I've attached high-resolution photos of the motherboard (front and back) and the USB-C daughterboard. Any guidance on where to probe would be greatly appreciated!

⟐ Commented 6월 26, 2026 at 5:14 GMT-7

Logitech MX Master Series Mouse: Copper contact pads ripped

Wed, 24 Jun 2026 02:35:48 -0700

Hi All. My very first post here. Hope to get some advice from the community here.

I received an MX Master 3S that could not power up. I disassembled it and realized that the 10UH 100 power inductor is gone, and the contact pad highlighted in red was ripped off. I will try to take a close-up photo of it when I get home in a few days.

I have attempted soldering contact pads on bigger boards, but trying it on a mouse would be a first for me. I wonder if anyone here has experience in repairing such problems. Any advice would be appreciated.

⟐ Edited by author 6월 24, 2026 at 2:35 GMT-7

Logitech MX Master 4: Can the battery be charged

Fri, 19 Jun 2026 09:46:23 -0700

Can the battery be charged

⟐ Answered 6월 19, 2026 at 9:46 GMT-7

Logitech MX Master 3S: Why my mouse does not connect to my PC?

Tue, 16 Jun 2026 08:03:46 -0700

I had an issue with the mouse, left and right click doesn't work most of the time and i used the electronic dry cleaner but i turned on the mouse before the cleaner dries out so I replaced the battery. after replacing the battery, the mouse fails to connect to my PC (my PC can't even discover the mouse) using Bluetooth and using the dongle. I connect it directly and the same issue even though there is a red light flashing when i turn on the mouse.

⟐ Answered 6월 16, 2026 at 8:03 GMT-7

Logitech MX Master 2S: Sensor no longer picking up movement.

Mon, 11 May 2026 00:16:58 -0700

All other functions of the mouse work normally, it just will not pick up movement.

⟐ Commented 5월 11, 2026 at 0:16 GMT-7

Logitech MX Anywhere 3S: Left button not working

Fri, 24 Apr 2026 14:14:38 -0700

The left button intermittently works and has been getting progressively worse over time. Should I follow the disassembly steps as described to replace the battery and try and clean the buttons with compressed air?

⟐ Commented 4월 24, 2026 at 14:14 GMT-7

Logitech MX Master 3S: The device is un-responsive

Sat, 18 Apr 2026 07:04:17 -0700

The device become unresponsive without any pre failure notice, I have disassembled it for further check and reading is as follow

The battery charge is 4.1V

When cable is connected the battery slot shows 4.5V with the battery discounted

Even though no singe led shows sign of life, and no connection or status on the back side shows sign of connection

Any suggestions to repair

⟐ Commented 4월 18, 2026 at 7:04 GMT-7

Logitech MX Master 3S: Mother Board problem solve

Sat, 18 Apr 2026 06:43:43 -0700

Any idea where to buy Mx 3s mother board i have to replace it

⟐ Commented 4월 18, 2026 at 6:43 GMT-7

Logitech MX Master 3S: Cannot click left button

Tue, 31 Mar 2026 14:22:48 -0700

I bought this gear for around 1 year but it seems broken. I cannot click right properly. I have to click multiple times to complete the task.

⟐ Answered 3월 31, 2026 at 14:22 GMT-7

Logitech MX Master: Left click doesn't work all the time

Fri, 13 Mar 2026 00:16:17 -0700

The left click doesn't work properly,

⟐ Commented 3월 13, 2026 at 0:16 GMT-7

Logitech MX Air: How to open Logitech MX Air mouse to replace battery

Tue, 10 Mar 2026 04:19:31 -0700

I have a Logitech MX Air mouse. It still works perfectly but the rechargeable battery has pretty much worn out and is not holding a charge. I purchased a new battery for it, but can’t figure out how to open the mouse to replace the battery. There are two screws underneath the mouse, near the top, but removing them didn’t seem to do anything and I don’t want to force it and end up breaking the mouse. Can anyone offer a little advice on how to open the mouse? Any help would be greatly appreciated. Thank you!

⟐ Commented 3월 10, 2026 at 4:19 GMT-7

Logitech MX Master 3S: Both left and right buttons malfunctioning

Fri, 06 Mar 2026 06:20:21 -0700

Less than a year after purchasing the MX Master 3S, the left button started to not register clicks (about 2/3 of the time) and shortly after, the right button followed the same issue.

I would really like to have a guide on replacing switches and the parts that fit here.

Thanks,

⟐ Commented 3월 06, 2026 at 6:20 GMT-7

Logitech MX Vertical: MX Vertical Optical Repair

Mon, 02 Mar 2026 14:12:26 -0700

Hi there, my MX Vertical isn’t moving the cursor anymore.. However, the buttons still work (e.g., left/right click, wheel, fwd/back, etc.). Does anyone know of a way to repair this?

Is the optical sensor easy to replace? Could this perhaps just come loose?

Any experience with this issue would be greatly appreciated as I haven’t seen anything pertaining to this particular mouse.

TIA

⟐ Commented 3월 02, 2026 at 14:12 GMT-7

Logitech MX Master 3: Why it’s continuously blinking in red

Sat, 28 Feb 2026 16:30:28 -0700

Hi my mice started to blink continuously in red I tried to charge it and I tested individually without the battery, so it’s no the battery, it’s look like a permanent dead or is having a short circuit

⟐ Answer edited 2월 28, 2026 at 16:30 GMT-7

Logitech MX Ergo: Where can I get replacement buttons for the main board?

Wed, 25 Feb 2026 07:43:43 -0700

https://www.youtube.com/watch?v=GIs9FLmf...

here OP replaced the bad button with a replacement OMRON switch. Where can I order these?

⟐ Answered 2월 25, 2026 at 7:43 GMT-7

Logitech MX Master 3S: Logitech please please start selling replacement shells for the 3S

Tue, 24 Feb 2026 16:45:53 -0700

Bought a white refurb 3S several months ago and it's been a great mouse so far. However the rubberized finish means it stains really easily and is impossible to remove (I first accidentally got stains on it after peeling oranges) and now it looks awful.

It's very difficult to get hold of a replacement shell for the 3S (and non-S shells aren't compatible because the switches use a different spring), is Logitech intending to sell those as a replacement part anytime soon?

⟐ Answered 2월 24, 2026 at 16:45 GMT-7

Logitech Anywhere Mouse MX: Double click acting on single click

Fri, 20 Feb 2026 11:35:54 -0700

Computer is acting as a double click when I am single clicking?