"There are TWELVE plastic clips holding the front and back of the Fuze together: eight along the sides, two along the top, and two very frail ones along the bottom. It takes a good deal of force to pry the clips free of their sockets, and it's a downright harrowing experience. The two clips along the bottom of the device will likely break during disassembly.
I used a small electronics screwdriver and a LOT of patience. Wedge the screwdriver into the seam between the front and back of the device, then twist gently. Try to pop one or two clips apart at a time.
"Remove ribbon cable from face plate. Lift the face off and flip the brown ribbon release flap on the connection."
Huh? Brown ribbon release flap on the connection?
This is what happens when teenagers try to write instructions.
After cracking the case apart, you'll find the front and back halves still joined by an amber ribbon cable, without much play in it. Put a finger or side of a pencil against the inside curve of that ribbon and give a little push down, toward the bottom of the device. The cable will slip out of the socket mounted to the back of the device. I wonder how you get it back in....
I'm not changing a battery. I need to get to the wheel. It won't turn. There must be something inside, gumming things up.
There's a piece of black tape covering the wheel. Starting along the bottom, carefully lift the tape up, toward the screen cover. Do not remove it completely--leave it attached by the grounding strap. Under the tape, a thin metal plate covers the wheel assembly. The plate is secured by three tiny Philips bolts. The metal backing of the wheel assembly is secured with two more Philips bolts.
These bolts are extremely small and easy to lose. Be careful...."
extrait de ce tuto de démontage
http://forums.sandisk.com/t5/Fuze/Need- ... d-p/101568
good luck