Fixing The Logitech MX Master 3S Buttons - Teardown

In this video, we tear down the Logitech MX Master 3S to fix a common button failure. I'd recommend getting the Kailh switches instead of the ones I bought. The dimensions of the switches are 6 x 6 x 7.3 mm, so if you search for those measurements, you'll find suitable replacements.

[@jaymarkestrera3691]

I went through three MX Master 3s before discovering how to fix them. All of them had their switches replaced due to a frustrating "double-clicking" issue that developed after about a year, which was disappointing for such an expensive mouse. If it weren't for the amazing scroll wheel, I probably wouldn't buy it again. However, once I learned that the switches could be replaced, I jumped at the chance to do so. Now, all my MX Master 3s are performing even better!

[@alex72194]

Thanks man! I just fixed my MX Master 3S after logitech told me to throw it away. I bought 10 switches for 0.95EUR from AliExpress, and replaced both left and right clicks. Now my mouse is as good as new. THANK YOU!

[@Serbo-Greek]

I pressed the like button to this video 10 times to have it actually klicked!

[@jakedaniels1445]

Just replaced the switches on mine last night, then this video pops up. I used the Kailh switches ( just in yellow) and they feel better than the originals IMO; plus they're even quieter. Got 'em on Aliexpress for a couple bucks shipped, and I even have spares which is nice. Definitely recommend a third hand, it was a pain without one.

[@geofaco]

Can you please share the link to the aliexpress?

[@bAdorablePeach]

They are very aware of it as all of their mice have this same problem. I have fixed 5 mice by now, first one was 6 years ago. The reason why this is happening is that the switches are corroding on the inside. The cause of the corrosion is that the switches are not rated for the voltages Logitech runs them at, the documentation specifically outlines the voltages the switches are tested for and Logitech somehow misses that every time. Given how common this issue is with their mice and how long this has been known for, I choose to believe that this is an intentional decision. Further more, if this happens during the warranty period, they ship you a new mouse no questions asked(more or less). A company does not approve warranty claims like that unless it is a calculated decision. TLDR: Film a video of your mouse buttons "not working" 3 months before the warranty is up(any shorter and they will delay response until the warranty is up) and you get a brand new mouse. Life hack

[@theTrigant]

It is called planned obsolescence

[@alexandersedeke]

I’ve known Logitech since 1984 and have owned several of their products over the years-three Harmony remotes, four webcams, 15 keyboards, and countless mice. One thing I've found consistent with Logitech products is that they tend to break right after the warranty expires. For me, it happens after just one year, as I’m a programmer and use these products extensively throughout my day. Since 2010, I’ve been using Apple products, not as a fanboy, but because, despite my preference for Linux on good hardware, there’s a lack of essential apps. I didn’t use Logitech at all until my son gifted me the MX Master 3S. Now, just a year later, I’m facing the same issue with the mouse. Consistency is good, but to be honest, while the Apple mouse is precise, it also tends to last no more than 3-4 years. It’s disappointing that after decades, this recurring issue continues to affect Logitech products.

[@Sidefectz]

But this is how warranty works in general. All products are tested thoroughly and the average lifespan is calculated. Then they add some additional time to that lifespan and call it warranty period. The goal is that most devices outlive the warranty, not work forever; it's quite intentional and not even a secret.

[@sechi7]

This is my third MX Master 3S and I'm having the same problem. I'll try this solution since Logitech will never admit their design flaw.

[@willemshepherd2079]

I've had an MX Master 1 for about 8 years now - still works like a champ!

[@sonchii]

It's not a mistake it happened to my MX Master 2 so I bought the MX Master 3s to replace it. Then the same thing happened within a year to my MX 3s. Also the scroll wheels on both eventually malfunctioned and my MX 2 laser stops working whenever it feels like it. The mice feel amazing, but I've had cheap amazon mice that last 5+ years with no problems.

[@Recovering_Californian]

Here because my sons 3S left button started to work intermittently. I have a MX 3 (no S) and it's worked great for years. Seems the 3S has substandard buttons.

[@HerrDerpington]

I've repaired all of my mice in the last 15 years by opening those (mostly) Omron switches and flattening the thin copper back into it's original form. My MX Anywhere 2 lasted for 8 years and now my MX Anywhere 3 is currently in it's 4th fix.

[@belabronson3926]

I wish I had better skills with that. I killed my Mx anywhere in the proces. Like every other electronic hardware fix I approached. I'm no hardware repair guy 😂

[@Frontline_view_kaiser]

I've had nothing but issues with my MX Master 3S. First the programming on the buttons would cease working at random times, next the mousewheel got stuck in freespin and now, finally the Bluetooth does no longer work. The fact that all this occurred only weeks after the warranty expired and that this is such an expensive mouse makes me never want to spend a dollar on Logitech again

[@garrettvogelepersonal]

Can’t believe you navigated this so well. I tried to change out the battery and broke the ribbon cable lock trying to get it back together and now I think it’s kaput haha

[@Danny-ex3tj]

yours kaput, mine goes kebambam

[@eBoard3R]

🤙🏽🤟🏽👌🏽 *Planned obselescence is near enough an evil symptom of our current type of capitalism* 😢 From the days of the "lightbulb conspiracy" to "hidden chips" in printers to now products of lesser quality, way harder to repair, and psychology of newest versions. subscriptions from software to usin features of hardware is the new "evil" 😪

[@FlatLanderTech]

Very true, it seems like a far more ingrained problem, its going to take a big shift in peoples perception and thought to change this issue.

[@PWingert1966]

I found a series 3 mouse at my local thrift store for $CDN5.99 and lo and behold it has this issue. I left a series 2 mouse that had no clicks on the click button and the right one was permanently depressed (A psychiatrist would not help it be less depressed! LOL) I am betting they got a large batch of bad buttons. possibly in the millions on units leading to a widespread issue like we are seeing. Of course Logi never does recalls so the only option is to fix it. One video I watched also added a couple of pieces of masking tape to give a firmer click experience.

[@shodanxx]

They've only been making mouse with 30 years you have to give them some slack, buttons are really complicated and sometimes things break in just the right way that increases their sales and that makes it really difficult to do something about it !

[@TECHBURRGER]

Ordered Kailh silent 6x6x7.3 via aliexpress, right mouse button died, mx master 3s. This is last logitech product I bought

[@JuanKarloCC]

Thanks for record this

[@theTrigant]

Thanks for the repoair video, but iut is of course planned obsolescence. How blind can one be to not see that?

[@korak_gl]

I think asus made a pretty good mouse with mechanical switches that are hot swap, i think it’s the ProArt Mouse MD300. I enjoy logitech, but I would like my mouse to last like my old Logitech G600 (around 8 years) wich still alive but does not have that many features, sadly.

[@永Tom]

Looks a great mouse, but it doesn't seem compatible with macos. Unfortunate as i think asus is quite good.

[@永Tom]

My left click stopped working after one year too

[@marianpelmus]

I have an MX Master 2S for almost 6 years now and it still work like in first day I changed the outer shell as the rubber got nasty, but beside that, everything was ok, no issues (at least not one without an easy fix) I plan to buy a second one, as the MX 3S is a bit too big for my hand

[@Glitch120]

By chance do you know the dimensions of the thumb button (gesture) switches? In addition to my LMB, the thumb also died but it's a different height switch.

[@AndreiLupsa]

Logitech make good mice, if you are ready to solder new switches after a year of use. A hate them for this. It is not just MX series. Gaming Logitech mice have same issue with switches not clicking or starting to double-click.

[@Superradman]

funny thing is that Logitech themselves think optical switches are better their current "gaming flagship" mouse the g502x has optical switches.

[@marekasuch1532]

anyone have symbols of the original switches and the replecement?

[@belabronson3926]

Yeah. I don't buy Logitech anymore. Even though I owned many Modells I liked a lot. 50+€ for only 2 years of usage is a dealbreaker.

[@ArifGhostwriter]

Okay - you seem to have edited & completely skipped past the most crucial step - which is how you're converting it from the original switch, to the more traditional switch we see you playing with.

[@FlatLanderTech]

From 7.00 to 8.00.

[@ArifGhostwriter]

​@@FlatLanderTech Nope - the thing you're doing at 5:07...

[@3nduser]

F%^%!! the mx master 3s!!!! I bought this mouse 5 months ago brand new, and today the battery wouldnt charge. I found a reddit thread to unplug the battery and then replug and charge but the freaking battery plug was SO FREAKING HARD to unplug that it basically broke off the motherboard. I have fixed computers, laptops and ps5's and have never had this problem removing these smalls plugs. I'm so mad! I can't even find a spare mx master 3s motherboard anywhere, If anyone finds one please shoot me the link, id be in your debts. im looking for a different mouse, screw logitech! . Good video btw, thanks for helping the enduser community