Well.. there are alot of screws and ribbon connectors on the system board. Other than that it's not too different. You have to learn some troubleshooting skills for the screen but it's not at all difficult.
One trick I've learned is that if you've lost some screws, make sure you have enough to replace all the outside screws on the case. Don't worry about leaving one out inside. That way the customer won't know any better
