This thread is meant to exchange experience about the longevity of maschine controllers. To gather some data about typical lifespans of the hardware and best maintenance practices.
Any hardware manufacturer should also be judged by the build quailty of their products. However I don't want this to be a "NI is evil because their products don't outlast eternity!" thread. Im gonna approach it naively and just assume that they also intend their hardware to last longer than 1 day after warranty. It might be wishful thinking but ideally, user experiences can also help the engineers at NI to make effective improvements on future hardware revisions.
My experience with the MK3
after ~3.5 years of moderate use
My controller recently started to exhibit symptoms of dementia, meaning that occasionaly it will outright fail to start to do anything but function as an audio interface. However I have yet to confirm this is a hardware issue and not just some software glitch in my OS.
Some of the endless encoders have occasional ghost inputs, but so far this hasn't caused me any problems.
And the pads have lost a fair amount of sensitivity - mainly that the range of minimal registered velocity and maximum velocity seems to be significantly smaller than it used to be. At least according to my subjective impression. The pad sensitivity hardware setting doesn't help much with that, and for the provided velocity scaling options (Soft3 - Hard3) I honestly find it difficult to notice any difference between them.
Otherwise I'm still quite happy with the build quality, all the buttons still feel super precise and reliable, all the labels are readable. If I gave it a proper clean it would look almost new.
Besides putting a deck saver on when I don't use it, it doesn't demand much maintenance.
My maintenance tip #1
Don't pour beer over your pads. 😛 I tried that with my MK2 back in the day and I suspect the MK3 is also not designed to handle this kind of input.