5 - 30 minutes
My kid dropped his MacBook and broke the hinge. Apple said fixing the hinge was a major repair. He lived with it for a while but when the HD also died I decided to try to fix it myself.
Went fine. Fixing the hinge really was a big, time consuming job since it required disassembly of the display. But it went fine. I also replaced the optical drive and the HD.
The clear, step-by-step photos on iFixit.com were the main reason I decided to give it a try. And having the correct parts and tools indicated on the site was also a major help. I did have a question about if I had the correct optical drive but Mike responded quickly that it was.
Phillips #00 Screwdriver
MacBook/MacBook Pro 15" 8x SuperDrive
MacBook Core Duo Left Hinge Cover
MacBook Left Clutch Hinge