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PowerBook G4 Aluminum 15" 1-1.5 GHz Logic Board Replacement

  • Autor: iRobot
  • Dificultad: Difícil

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

Paso 1 Logic Board  ¶ 

If you have already removed the display or hard drive, you may have already removed some of the cables described in this step. You may also ignore their presence in the following images; they do not further affect the disassembly procedure.

Paso 1 Logic Board  ¶ 

  • If you have already removed the display or hard drive, you may have already removed some of the cables described in this step. You may also ignore their presence in the following images; they do not further affect the disassembly procedure.

  • Disconnect the indicated 14 cables from the logic board, starting in one place and moving around the board.

Paso 2  ¶ 

There should be no cables connected to the top of the logic board at this point.

Paso 2  ¶ 

  • There should be no cables connected to the top of the logic board at this point.

  • Remove the following 12 Phillips screws from the logic board:

  • Six 4 mm around the edges of the logic board.

  • Two 5 mm securing the right speaker to the logic board (move the speaker off of the logic board).

  • Three 6 mm with wavy washers in the upper, left corner of the logic board.

  • One 4 mm underneath a black bumper in the back right corner of the logic board.

  • One 4 mm screw may not be present on some logic boards.

Paso 3  ¶ 

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

Paso 3  ¶ 

  • 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.

Paso 4  ¶ 

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

Paso 4  ¶ 

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

Paso 5  ¶ 

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

Paso 5  ¶ 

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

Paso 6  ¶ 

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).

Paso 6  ¶ 

  • 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.

Paso 7  ¶ 

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. The following steps refer to replacing the thermal paste between the processor and heat sink; follow these steps only when you are ready to place the logic board in the computer.

Paso 7  ¶ 

  • 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. The following steps refer to replacing the thermal paste between the processor and heat sink; follow these steps only when you are ready to place the logic board in the computer.

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

  • For more advanced instructions on this procedure, see our Applying Thermal Paste Guide.

Paso 8  ¶ 

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

Paso 8  ¶ 

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

Paso 9  ¶ 

Apply a new layer of thermal paste to the copper heat conduit.

Paso 9  ¶ 

  • Apply a new layer of thermal paste to the copper heat conduit.

  • 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.