Some of the keys on my Mac are now playing up, before they were simply falling off but now they won't give any function when pressed on screen. Last time I tried to replace the keyboard with an eBay part. It was doing the same thing - dead rows of keys - seconds after it was installed. Perhaps I got a lemon. I hope so. Because now that my original is playing up in this way, I've decided to give it one more try. Hopefully this time it'll work. There's a 1 year returns warranty on the part. Anybody else got experience with these parts and had any success? If only I could afford a new MacBook Pro. Sigh.