I faced the same issue - there are 6 screws at the top, 5 at the bottom, and 3 screws at each side from the left/right. They're hidden behind the cover glued around buttons. Glue looks like double-sided tape. Be careful and keep slow while trying to peel off the cover from the edges. If you use something to slip under the cover, make sure you'll not move pieces of glue - otherwise, it'd be hard to glue the cover back and keep it smooth as it was originally. I can say, that I failed this task and there are a few folded places now. After screws are removed, you'll be able to remove the back panel and see the chip and wires. Those who need to disassemble it further - it's not going to be easy, since the rest parts are connected with rivets..