I recently had the same experience on my MBA A1370. Spilled liquid on the keyboard. I turned it upside down to remove the liquid and tried to dry with a little bit of heat from hairdryer. The first restart test ended up in only the fan spinning (I stopped it immediately with a long push on the on key). Second after trying to dry it was with half screen backlight blinking. I stopped it immediately too. After a few days of rest, in order to dry it properly, the screen was back to normal but keys were acting like the ctrl key was always pressed (seen on keyboard display utility) however the trackpad was working fine. Everything was fine when using an external keyboard on USB. Once I managed to find the right tools to open the case, I was able to check that LSI was red only on the back of lcd connector none anywhere else. I went to the case following the instruction but due to the rivets the keyboards layers are not accessible. I asked some chinese friends to provide me the right naked keyboard for the...