My "T" was sticking on my keyboard so I took a look at Google and a YouTube video said no problem. Drop some alcohol into the key causing the problem, tap the key a few times, turn it over and tap the keys again a few times. Then leave it upside down to dry. I thought I followed his advice but in the process somehow fried my keyboard (or the connection ( so didn't have access to my computer for a day. Went to the Apple store this morning, got a new keyboard, and told them the story. They said always check Apple Support first (which I normally do), it would have explained what to do. Be careful what advice you trust.