原帖由： Dan ,
I would start by carefully popping off the key cap and the neighboring caps so you can clean the area of anything that spilled onto the keyboard. Start by making sure the system is off and if possible disconnect the battery. Use a cotton swab (Q-Tip) slightly dampened in distilled water (not tap!) wipe down the area. Next you'll wipe the area again this time with a good quality Isopropyl alcohol (85% or better). Using some can'ed air softly blow the area down to help speed up drying. Put the keycaps back on and try the system now. Any better? As to the next step if this failed. Sadly, the keyboard is mounted to the upper case assembly. It is quite a lot of work to replace and the part is not cheap! You may want to think about using a USB or wireless keyboard. If you really want to get this fixed here is the IFIXIT guide: [guide|10963|MacBook Air 13" Mid 2012 Upper Case Replacement]. Here is the IFIXIT part: [product|IF188-078|MacBook Air 13" (Mid 2012) Upper Case with Keyboard]. Just to give you an idea on the amount of work and the parts cast.