Difficulty

Difficult

Steps

13

Time Required

                          30 minutes

Sections

1

  • Logic Board
  • 13 steps

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  • BackTwentieth Anniversary Mac

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What you need

Step 1

              Logic Board
  • Use the release tabs to remove the rear cover

Use the release tabs to remove the rear cover

1024

Step 2

  • Remove any ComSlot II or PCI cards that may be installed and their risers.

Remove any ComSlot II or PCI cards that may be installed and their risers.

Step 3

  • Unplug the logic board connections to the PRAM battery and fan.
  • Remove the PRAM battery from it’s Velcro mounting.
  • Remove the four #0 Philips screws securing the hard drive and processor fan assembly.
  • Remove the hard drive and processor fan assembly.

Unplug the logic board connections to the PRAM battery and fan.

Remove the PRAM battery from it’s Velcro mounting.

Remove the four #0 Philips screws securing the hard drive and processor fan assembly.

Remove the hard drive and processor fan assembly.

Step 4

  • Remove the two T6 Torx screws securing the A/V input board.
  • Remove the A/V Input board

Remove the two T6 Torx screws securing the A/V input board.

Remove the A/V Input board

Step 5

  • Remove the white plastic shield
  • Remove the T6 torx screw securing the logic board to the frame.

Remove the white plastic shield

Remove the T6 torx screw securing the logic board to the frame.

Step 6

  • Turn the TAM around with the front facing you.
  • Use a spudger to gently loosen the speaker covers from their press-fit snaps. Remove the speaker covers.

Turn the TAM around with the front facing you.

Use a spudger to gently loosen the speaker covers from their press-fit snaps. Remove the speaker covers.

Step 7

  • Remove the six T6 torx screws securing the front case to the rear case.

Remove the six T6 torx screws securing the front case to the rear case.

Step 8

  • Gently pull the tabs toward the center to release the latches hold the front and back together. These tabs are fragile but release easily. Use caution.
  • Lean the top forward and lift up to pull the front case from it’s bottom latches.
  • DO NOT TRY TO REMOVE THE FRONT CASE. It is still connected to the back case by several wires and cables.

Gently pull the tabs toward the center to release the latches hold the front and back together. These tabs are fragile but release easily. Use caution.

Lean the top forward and lift up to pull the front case from it’s bottom latches.

DO NOT TRY TO REMOVE THE FRONT CASE. It is still connected to the back case by several wires and cables.

Step 9

  • Disconnect the pink and white backlight inverter cable and the black and white right speaker cable from behind the floppy disk drive on the right side.
  • On the left side, disconnect the 50-pin SCSI ribbon cable, analog audio cable and power cable from the CD-ROM drive.
  • Disconnect the black and white left speaker cable.
  • Disconnect the flat, orange display data cable.
  • Open the top case to the left like a book. There will be one more 50-pin cable to disconnect from the front control panel board.

Disconnect the pink and white backlight inverter cable and the black and white right speaker cable from behind the floppy disk drive on the right side.

On the left side, disconnect the 50-pin SCSI ribbon cable, analog audio cable and power cable from the CD-ROM drive.

Disconnect the black and white left speaker cable.

Disconnect the flat, orange display data cable.

Open the top case to the left like a book. There will be one more 50-pin cable to disconnect from the front control panel board.

Step 10

  • The easiest method to remove the logic board is to remove it with the tuner card and cabling.
  • Disconnect the five cables illustrated.

The easiest method to remove the logic board is to remove it with the tuner card and cabling.

Disconnect the five cables illustrated.

Step 11

  • Remove the T10 torx screw and extract the stiff wire cable brace from the left side

Remove the T10 torx screw and extract the stiff wire cable brace from the left side

Step 12

  • Carefully peel back the tape securing the cables to the white, plastic logic board cover. Pull the cables back to reveal the back side of the logic board.
  • Remove the five T10 screws holding the logic and tuner boards to the back case.

Carefully peel back the tape securing the cables to the white, plastic logic board cover. Pull the cables back to reveal the back side of the logic board.

Remove the five T10 screws holding the logic and tuner boards to the back case.

Step 13

  • Lift the logic board from the left edge then straight up to remove it from the rear case.
  • The logic board slides out of the cabling connector.

Lift the logic board from the left edge then straight up to remove it from the rear case.

The logic board slides out of the cabling connector.

To reassemble your device, follow these instructions in reverse order.

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                                                                                      6 other people completed this guide.

Author

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                    Dylan

Member since: 02/04/2013

471 Reputation

                                      1 Guide authored                  



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                                                        +5 more badges

vitalisfrance - Sep 6, 2013

Reply

Hi,

One of the member of my Forum is looking for the Bose subwoofer including the power cable. Have you an idee on where could he find it ?

Thx.

Raziel

Deagol - Jan 13, 2014

Reply

It’s missing the step to remove the two torx screws on the upper back side, below the cover with all the holes, after Step 5

garo211 - Aug 9, 2016

Reply

Dose anybody know what goes in the top-most chip slot that is empty? Is that for an L2 Cache chip?

coryheisterkamp - Oct 15, 2022

Reply