ByteRot :: Power Mac G4 M5183 Logic Board Replacement

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Power Mac G4 M5183 Logic Board Replacement

Device	Power Mac G4 M5183
Difficulty	Easy
Time	20 minutes
Steps	8

This guide is by Justin Petrilli on iFixit and is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0. ByteRot mirrors it for non-commercial preservation: formatting changed and photos resized for old browsers; full-size photos and the text are on the FTP in /DOCS/REPAIR. Original guide >>

This guide will show you how to remove the PowerMac logic board.

Tools: Phillips #1 Screwdriver; Spudger

Step 1

• Pull on outer latch.
• Lower door until it is level with your work surface.
• CAUTION: Before working on the computer make sure it is not plugged into a power supply, then touch a metal object. This discharges static electricity, which could damage the computer.

Step 2

• Use the spudger to pry the clips horizontally off of the heat sink.
• Fully remove the clips by lifting upwards.

Step 3

• Remove the heat sink by pulling upwards, off of the logic board.

Step 4

• Locate the RAM modules.
• Pull side tabs outward. The RAM will pop out of the housing.

Step 5

• Remove the single screw with the Phillips #1 screwdriver.
• Pull the graphics card up and out.

Step 6

• Remove the six indicated cables attached to the logic board.
• Use the spudger to remove the modem cable as indicated.

Step 7

• Unfasten 3 Phillips screws revealed beneath the heat sink on the CPU board.
• Carefully remove the CPU board from the Mother Board.
• Remove the barrell nut screws from the Mother Board which held the CPU board.
• Unfasten 3 Phillips #1 screws on Mother Board as shown in illustration 1.
• Slide the logic board about a quarter of an inch to free it from the three retaining pins.
• Pull upwards and outwards to fully remove the logic board.

Step 8

• After removing the (3) #2 philips screws, remove the (4) 1/4" hex nuts, then slide as directed and remove board.

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