re5et
11
id expect its quite straightforward , there are many youtube vids about keyboard repairs for other synths , I’d suspect the mechanisms on analog keys is quite similar to many other keyboards. unlikely to be any specialist knowledge , just a screwdriver and confidence to do it. (i could be very wrong though)
elektron are usually pretty good with spares too.
it he short term you might be able to just swap the broken one with a note you rarely use (like top most white key or something).