Spilling coffee on an MX Keys is not a death sentence if you act in the first 30 minutes. Coffee contains sugar, which when dry becomes sticky and electrically conductive — that is what kills the keyboard, not the liquid coffee itself. The faster you clean, the higher the rescue rate (75% if action within 30 min, 30% if action after 24 h). This emergency procedure covers the first 6 hours.
Diagnostic
Assess scope: (1) a few drops localized on 2-3 keys → local cleaning is enough; (2) half a cup over half the keyboard → disassembly and deep clean required; (3) full cup + keyboard was on → short-circuit risk; (4) sugary liquid (latte, soda, juice) → immediate cleaning mandatory. The sugarier the liquid and the more dried, the worse.
Méthode
- 1
Immediately: unplug everything, flip the keyboard keys-down to drain excess liquid, blot with absorbent cloth (don't rub).
- 2
Within the hour: remove affected keys with a plastic spudger, clean the scissor and membrane with 70%+ isopropyl alcohol (not tap water — mineral residue).
- 3
Air-dry for 24-48 hours in a dry place, keys removed. No hairdryer (deforms plastic).
- 4
Reassemble and test. If some keys don't respond after 48h, the membrane below the scissor is damaged — full keyboard teardown needed to clean the PCB.
FAQ
Does rice really work for keyboards?
No, rice is ineffective for keyboards (and phones, despite the urban legend). Rice absorbs ambient humidity, not liquid trapped under a membrane. Prefer dry air or room-temperature evaporation 24-48h.
My keyboard still works after the coffee, should I worry?
Yes — sugar will dry and harden within 12-72h, and some keys will start to stick or respond poorly. Preventive cleaning is mandatory within the first 6 hours, even if everything seems fine. Better a €0 cleaning now than a €15 motherboard swap in a week.
What's the difference between 70% and 90% isopropyl alcohol?
90% is more effective at dissolving sugary residue but evaporates faster. 70% leaves less mineral residue as it contains 30% distilled water. For a keyboard, 90% isopropanol is preferred (less water = less residual short-circuit risk).
Fast action = 75% rescue. Coffee = sugar + water, and sugar is the real killer. 70-90% isopropanol cleaning + 24h drying, and your MX Keys can live 5 more years.