Introductory notes: Disassembling your Wii will invalidate your warranty. consolesandgadgets.co.uk takes no responsibility for any damage done during this process.
The Wii uses two different types of screws. One is a regular Philips/Crosshead screw with a Cross head that can be unscrewed with common screwdrivers. The other is a Triwing screw with an unusually shaped three point head.
You will need a special Triwing Screwdriver (£2.79) to unscrew these. Wii replacement I-Cases come with a free Triwing screwdriver. You will need both a crosshead/Philips screwdriver and a Triwing screwdriver in order to follow this guide. Make sure you keep all the screws safe as you will need them to put your Wii back together again.
Step 1 As indicated by the picture, remove the 4 bottom left rubber stands and screws by using a crosshead screwdriver.
Step 2 Place the Wii on its side and remove the rest of the rubber stands and screws with a crosshead screwdriver.
Step 3 Remove the battery and the screw.
Step 4 Follow the instructions on the panel to remove the two plastic plates.
Step 5 Remove the three highlighted screws with a crosshead screwdriver.
Step 6 Remove the black top plate of the console. Now unscrew the four highighted screws.
Step 7 Unplug the power source, as indicated by the arrow.
Step 8 Remove the right plastic plate and the metal DVD-ROM cover. Now remove the screws indicated in the picture.
Step 9 Slowly tilt the DVD player upward towards the top of the Wii. There are two wires that need to be disconnected before you can safely remove the DVD unit. Firstly, lift the brown catch to release the pressure holding the cable in place (Arrow 1). You should now be able to pull this cable out (Arrow 2). Give the cable at Arrow 3 a gentle tug to remove it.
Step 10 Remove all six of the circled screws
Step 11 Unplug the power source of the fan by giving it a tug upwards.
Step 12 Remove the unplugged fan and the flow wind tunnel, then remove the three highlighted screws.
Step 13 Remove the black plastic frontage and unscrew all 14 highlighted screws.
Step 14 Peel off the tape and lift the metal section.
Step 15 Unscrew the four screws and remove the heat sink.
Step 16 Remove all the parts from the left plastic plate.
Congratulations! You have now disassembled your Wii.