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PowerBook G4 Aluminum 15" 1.5-1.67 GHz Logic Board Replacement

This motherboard includes all ports on the right side except USB.

Adım 1 Logic Board  ¶ 

Remove the two black Phillips screws from the right speaker.

Adım 1 Logic Board  ¶ 

  • Remove the two black Phillips screws from the right speaker.

  • Lift the speaker away from the logic board and place it aside

Adım 2  ¶ 

Use your fingernail to flip up the black plastic flap locking the modem cable in place.

Adım 2  ¶ 

  • Use your fingernail to flip up the black plastic flap locking the modem cable in place.

  • Slide the modem cable from its connector.

Adım 3  ¶ 

Disconnect the 13 indicated cables, removing tape as necessary.

Adım 3  ¶ 

  • Disconnect the 13 indicated cables, removing tape as necessary.

  • When re-installing the board, make sure the two small connectors at the right hand side are above the board before inserting the screws.

Adım 4  ¶ 

Remove the following 8 Phillips screws from the logic board:

Adım 4  ¶ 

  • Remove the following 8 Phillips screws from the logic board:

  • Three 6.5 mm in the upper left corner.

  • Five 4.5 mm around the edges.

Adım 5  ¶ 

Two cables still connect to the logic board and must be removed before pulling the board entirely out of the computer.

Adım 5  ¶ 

  • Two cables still connect to the logic board and must be removed before pulling the board entirely out of the computer.

  • Use a spudger to gently (very gently) pry up the left side of the logic board.

  • If the logic board does not immediately come free, it may be necessary to soften the thermal paste between the logic board and heat sink. You can soften the thermal compound using a hairdryer. Move the hairdryer back and forth between the two fans about one inch above the logic board for one minute. At this point, the logic board should now come free easily.

Adım 6  ¶ 

Disconnect the DC-In connector from the left side of the logic board.

Adım 6  ¶ 

  • Disconnect the DC-In connector from the left side of the logic board.

Adım 7  ¶ 

Disconnect the battery cable from the front, left corner of the logic board.

Adım 7  ¶ 

  • Disconnect the battery cable from the front, left corner of the logic board.

Adım 8  ¶ 

Grasp the logic board at the left edge with one hand and at the thinnest section with the other hand. Lift the left edge of the board up to approximately a 30 degree angle (if you don't have your protractor handy, just lift until the DVI port clears the right hinge).

Adım 8  ¶ 

  • Grasp the logic board at the left edge with one hand and at the thinnest section with the other hand. Lift the left edge of the board up to approximately a 30 degree angle (if you don't have your protractor handy, just lift until the DVI port clears the right hinge).

  • Once the logic board clears the ports, slide it out to the left.

Adım 9  ¶ 

Important: when you reinstall a logic board, you'll need to replace the thermal paste that goes between the processor on the logic board and the heat sink. Failure to remove the old paste and apply a new layer can cause the computer to overheat and sustain damage.

Adım 9  ¶ 

  • Important: when you reinstall a logic board, you'll need to replace the thermal paste that goes between the processor on the logic board and the heat sink. Failure to remove the old paste and apply a new layer can cause the computer to overheat and sustain damage.

  • To properly reassemble your PowerBook, you'll have to clean off and replace the old thermal compound. Use our Applying Thermal Paste Guide to prepare the processor and heat sink surfaces.

Adım 10  ¶ 

Use a firm plastic edge to scrape the thermal material off the processor.

Adım 10  ¶ 

  • Use a firm plastic edge to scrape the thermal material off the processor.

  • When replacing the logic board, make sure all cables are routed around and above - not under - it, and to connect the two cables that do go beneath before pushing the board into place.

  • Place the logic board back in the computer, trying not to move it around once the processor has come into contact with the newly-applied thermal paste.