You will need one small philips screwdriver and a soldering iron.

You will probably also need another small screwdriver and/or a small wide tool like number two from the top.

I found it furthermore handy to have a small tweezer for grabbing the screws and a box to sort the screws. I can't remember where all the screws came from so it noted it on a piece of paper and put it in the room with the screws.