Remember to disconnect the battery once the cover is off. You don't want any live electricity. Then discharge all power by pressing the power button for about 30 seconds.
+
These should help:
[link|https://www.youtube.com/watch?v=Lbv-I3wsX4o|Tear down guide|new_window=true]
These should help:
[link|https://www.youtube.com/watch?v=Lbv-I3wsX4o|Tear down guide|new_window=true]
[link|https://www.youtube.com/watch?v=XyNvZwxHx0c|Replacing hinges|new_window=true]