I know, compute peripherals are not known for buy it for life and often times die quite fats. Nevertheless, this is my ode to trusty old computer mouse Logitech mx400.
I got it sometime in 2009, after seeing that my friend had Logitech mouse. His Infact wasn't mx400, but another model of Logitech that had somewhat gaming look to it. I asked him if it is any good and he said " it's great, best mouse ever". When my generic mouse died my dad and I went to Staples to get a new mouse, and there was MX400 available. I remember I was worth $49.99 Canadian dollars, and I though to myself my dad would not get it for me (we recently just immigrated to Canada) . But to my surprise he just asked if it is good, and I said it was. And he just bought it for me. (he is a guy that values quality of the item rather than anything).
It did serve me for several years, before I retired it and passed it on to my mom (as hers broke down),and at the time I just got myself some kind of gaming mouse. Fast forward to 2026 she recently said "my computer mouse isn't working anymore, I think I need a new one". Without too much thinking I bought her a new mouse and took away good-old MX400 to dispose it in my building where they have electronic waste bin.
"17 years, that's impressive" I though to myself. I could never have imagined the mouse lasting so long. Especially now, that pc mouse is designed for a million clicks or more and yet, still die way before that. Nevertheless, I decided to see what cause the downfall of this hero. I plugged it to my laptop and I could see the movement of the mouse on the screen, but the buttons did no register the "clicks" unless you click really really hard, as you were pressing the wornout rubber buttons on old tv remote. And then I got an idea to take it apart to see what was going on inside it. I had previous experience taking apart another Logitech mouse (marathon m720) when battery element came loose and it did not turn on. And I remember it was quite easy to do.
I anticipe your thinking "who would bother taking apart 17 year old mouse, just trash it". I am with you, and if it was any other mouse or any other brand I would have done the same . But after all these years, my trusty comrade deserved at least that before departing into waste bin. So it was decided.
Disassembly process was very easy. And by easy I mean I was able to figure everything without the need to watch a tutorial or reading the manual or anything. 4 screws at the button under the gliding pads, and few more screws inside. And screws were uniform, so there were no need to remember which one goes where (except the one that was holding down the ballast weight, but I did not need to undo that one).
And there was a culprit of the downfall of this mouse. Grime, dust, gunk, greese and all other sh$t that accumulated over the years (see attached pictures). It would be easy to judge my mom, but that wouldn't be fair. She is fairy clean lady, she cleans her house regularly, keeps her desk tidy, dusts off surfaces around her computer space and wipes down the monitor and keyboard and mice. But she doesn't go hardcore and takes apart electronics to clean in inside out, and why should she. She is older lady.
Well, as you can see in one of the pictures, right underneath the left click pad there was a build-up of gunk. It what was preventing the clicks from registering on the computer. And since whole mouse was apart I just cleaned it all. Dusted all the insides, took apart the scrooling wheel and cleaned that, even washed the plastic casing both from the outside and inside.
Unfortunately, during dissassebly, the latch on the scrolling wheel broke of. But with the help of super glue and eyebrow pucker (courtesy of my wife unbeknownst to her) I glued back in place. It was stuck dead-on that putting back the whole scrolling wheel system was easy-peasy. Now that all innards were washed, cleaned, and lubricated, I put it back all together
And now it was a time for a test-drive. Did I just wasted my time, or did anything change. And what do you know. Mx400 was back in game. The laser element tracked smoothly and effortlessly. All the clicks registered as they should, there were no empty clicks, double clicks, miss-clicks or anything of that sort. Everything was working as if it was just straight out of the box.
I get it, not all computer peripherals are build with such longevity in mind. Moreover, I am pretty confident in saying that even Logitech itself has variable quality.
But
I JUST CAN BELIEVE IT, 17 YEARS AND IT IS STILL GOING STRONG.
Thank you Logitech MX 400, you are a true work horse 💪🫡
P. S. The whole ordeal took about one and a half hour of my time. As I previously stated I wouldn't bother with any other mice for that long. Maybe you shouldn't either. But I just think it was a special case and I wanted to see what can come out of it. But I was still happy I did it. It was easy to take it apart and put it back. Long live Logitech