Difficulty

Moderate

Steps

6

Time Required

                          30 minutes

Sections

3

  • Bottom Plate
  • 3 steps
  • Bottom Plate Housing
  • 2 steps
  • PRAM Battery
  • 1 step

Flags

0

  • BackiMac G4 17 800 MHz EMC 1936

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Introduction

What you need

Step 1

              Bottom Plate
  • Unplug all the cables from the computer, including the power cable. Lay the computer face-down, supporting the neck and base with a soft cloth under the screen.

Unplug all the cables from the computer, including the power cable. Lay the computer face-down, supporting the neck and base with a soft cloth under the screen.

1024

Step 2

  • Loosen the four Phillips #0 screws.

Loosen the four Phillips #0 screws.

Step 3

  • Carefully remove the base access panel.

Carefully remove the base access panel.

Step 4

              Bottom Plate Housing
  • Remove the four 25mm T-15 screws.

Remove the four 25mm T-15 screws.

Step 5

  • Open the housing plate.
  • Be gentle with the wires still connected to the logic board so as not to ruin the cables.
  • A fixed plug connector between the logic board and upper unit will cause some resistance. Pull gently but firmly.

Open the housing plate.

Be gentle with the wires still connected to the logic board so as not to ruin the cables.

A fixed plug connector between the logic board and upper unit will cause some resistance. Pull gently but firmly.

Step 6

              PRAM Battery
  • Gently remove the battery from its holder using the plastic opening tool.
  • Insert new battery.
  • Clean and re-apply thermal paste to the heat sink areas circled in orange. See Step 15 in iMac G4 17" Model M9168LLA Hard Drive Replacement for better photos and description.

Gently remove the battery from its holder using the plastic opening tool.

Insert new battery.

Clean and re-apply thermal paste to the heat sink areas circled in orange. See Step 15 in iMac G4 17" Model M9168LLA Hard Drive Replacement for better photos and description.

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

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Author

                                      with 9 other contributors 


                    Justin

Member since: 10/05/2011

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Team

                       Cal Poly, Team 21-22, Maness Fall 2011                        

                                                  Member of Cal Poly, Team 21-22, Maness Fall 2011 



                    CPSU-MANESS-F11S21G22                     


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                                            13 Guides authored

David Hunter - Nov 28, 2011

Reply

We are not allowed to use screwdrivers to pry open stuff. Unfortunately, that is exactly what we did in step 6 of Dissasembling the back up battery

adoug27 - Mar 10, 2016

Reply

Don’t you need to replace the thermal paste?

Roland Brezina - Jan 24, 2021

Reply

I love my very first Mac ever, it is still working. After a couple of time living with its amnesia (forgot time and what else…) I’ve decided to replace the battery. Thanks for this helpful article. It made it easy to me to replace the battery.

SURIN Dominique - Jun 23, 2021

Reply

Good guide ! less than 20 minutes to change the battery, cleaning the interior included !!