In lieu of YetAnotherDrinkSpilledIntoHardware story ...
Many moons ago, I used to take dead keyboards home, take 'em apart, and run them through the dishwasher. A quick blow-dry (on low!) & reassembly and they were usually as good as new.
These days I still do the same thing, with similar results. But only with keyboards manufactured many moons ago. The Model M is dead! Long live the Model M!
Beer, because ... well, I'll leave it to your imagination.