Introduction
Removing the power supply of the Power Mac G4.
What you need
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The optical drive is in the top left corner of the case.
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There are four screws to be removed.
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The first screw can be seen in the first picture.
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The remaining three screws can be seen in the second picture.
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Remove the multicolored cable by grasping the plastic connector on either side and pulling with substantial force.
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There is a total of four screws to be removed.
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The first three can be seen in the first picture.
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The final screw can be seen in the second picture.
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There are three 2.5mm hex bolts located in the back of the computer that also need to be removed.
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A 3/32" Hex Key or Hex Driver, or a T10 Torx, are a bit small but may also work if gentle.
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Disconnect the power supply cables from the mother board by pressing in the tab on the back of the connector as shown.
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Before sliding out the power supply make sure to disconnect the cable to the big fan by pressing in the small black tab on the back of the black connector!
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Slide the power supply away from the back of the computer and pull it out carefully stringing the cables through the hole in the metal support.
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