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Changes to Step #1

Edit by Adam O'Camb

Edit approved by Adam O'Camb

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+[* black] With the hinge free to move, the iMac will be unbalanced and hard to work on. Repairs are fast and easy with an [product|IF145-470|iMac service wedge|new_window=true], but can be completed without one.
+[* black] ***Before beginning any work on your iMac:*** Unplug the computer and press and hold the power button for ten seconds to discharge the power supply's capacitors.
+[* black] ***Be very careful*** not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.