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iFixit sells MacBook, iBook & PowerBook parts and accessories Now Removing Logic Board

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Logic Board (product details: 800 MHz: IF133-020 1 GHz: IF133-022)
  • Turn the G4 over.
  • Remove the seven T8 Torx screws from the logic board.
  • The five black screws go on the right side of the logic board, the large silver screw goes at the top, and the small silver screw is located on the left side.
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  • Disconnect the indicated connectors from the logic board, removing tape as necessary.
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  • Carefully lift the logic board up and pull it away from you.
  • This step requires some force, but if the logic board will not come up, make sure that you have removed all the necessary screws and connectors.
  • On 800 MHz and above G4s, you must disconnect the fan cable from the logic board before you lift the board entirely off.
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