Whether there is a faulty part that needs to be replaced or you have an old iMac that is no longer functioning, you may want to open the case to reach the internal components. Taking apart an iMac G3 is a more involved process than with a PC because all of the parts are connected directly to the monitor in a smaller space.
- Skill level:
- Moderately Challenging
Things you need
Turn off the iMac G3 and unplug it. Remove all of the cables connected to the back of the computer. Rotate the iMac so that the back is facing you.
Find the two screws on the top of the case and remove them, using a screwdriver. Pull out the screw at the middle of the case that holds the small round plastic cover in place. Remove the plastic cover from the case.
Take out the two screws on the panel underneath the plastic cover. Rotate the iMac again so that the monitor screen is facing you. Pull up on the three plastic locks on the bottom of the screen and remove the entire outer plastic case.
Remove the screws at the top of the case connected to the hard drive holding case. Pull out the remaining screws near the VGA port on the bottom of the case. Pull off the remaining plastic covering so that all of the internal parts are revealed.
Pull the ATA cable and the power cable out of the hard drive. Pull the drive out of the computer and set it aside.
Take out the four screws holding the CD drive to the metal chassis. Pull out the data cable and power cable from the back of the CD drive. Tilt the drive slightly upward so that it is at an angle, and then pull it off entirely.
Remove the two screws holding the green adaptor board to the computer, just below where the CD drive was located. Pull the adaptor board out and set it aside.
Pull the RAM modules off the logic board. Pull out the cables running from the logic board to the monitor screen. Remove the six screws holding the logic board to the bottom side of the case and pull it out.
Disconnect the screws attaching the modem and output panel to the logic board. Pull the modem and output panel off the logic board to complete the disassembling process.
Tips and warnings
- Touch a metal object that is grounded to the floor before taking apart your iMac so that any built up static electricity in your body is released.
- Keep several small containers handy so that you can separate the different screws and have them readily available when you reassemble the iMac G3.
- Completely taking apart your iMac G3 will void the warranty provided by Apple.
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