Pop the two rubber caps off the bottom. Unscrew the two small phillips screws. On the top take the screen and cutters off. there are two small phillips screws holding the swivel too piece on. Now you have it down to the rotating pin only. Now go back to the screws on the bottom you took out. Carefully pry into the flat slotted area where the screws were and push out one ot the sides of the razor. From there you should be able to figure out the rest just be careful. Usually the solder joints from the battery on the board need to be resoldered. If not replace the battery. Good Luck from a doityourselfer!
Chuck, December 2009