I've done three of the 15" keyboards now. The 15" have screws but the 13" uses rivets and cannot be done. When looking for a replacement, be sure to get one with the bottom black plastic, the layer of white plastic and the clear plastic layer. I use an electric screwdriver to remove all the screws. I can now do a keyboard in a little over an hour. A novice will probably need two and half hours to do it carefully. Now the question becomes (after rebuilding the machine, another hour), will it work? I prefer to just use a new part.