Yep, Bad_Ad84 is right. It is simple to disassemble and reassemble a Wii although I know it can be intimidating at first. The first time I took one apart, I done it in stages and separated everything into bowls as I went. That helped me put the thing back together the same way it came apart. But now, I can almost do it with my eyes closed and I bet Bad_Ad84 could do it with his eyes closed.
You can use this and this as a reference to get you started.