Introduction

The ins and outs of replacing your IR board.

Before you work on the computer, unplug the computer and press the power button for 20-30 seconds to drain the stored energy in the power supply.
  • Before you work on the computer, unplug the computer and press the power button for 20-30 seconds to drain the stored energy in the power supply.

  • Loosen the two Phillips screws securing the access door to your iMac.

  • These screws are captive in the access door.

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Remove the access door from your iMac.
  • Remove the access door from your iMac.

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  • Remove the three T8 Torx screws securing the front bezel to the rear panel.

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  • Orient the iMac face-up, on its backside.

  • Use your thumbs to press both RAM arms in past the front bezel for enough clearance to lift it off the rear case.

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  • While holding the RAM arms in with your thumbs, lift the lower edge of the front bezel enough to clear the rear case.

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  • Re-orient your iMac so it sits upright on the stand.

  • Insert a plastic card up into the corner of the air vent slot at the top of the rear case.

  • Push the card toward the top of the iMac to release the front bezel latch.

  • Pull the front bezel away from the rear case.

  • Repeat this process for the other side of the front bezel.

  • It may be necessary to apply several layers of duct tape to the top of the access card to aid in releasing the latches.

  • If the bezel refuses to release, try pressing the lower edge back onto the rear case and repeat this opening process.

Using a strongish magnet will grab and release the latches.

darkstar448 - Réponse

Quote from darkstar448:

Using a strongish magnet will grab and release the latches.

Are you sure it's safe to do this? How close is the hard drive, won't magnets interfere with it?

Sarah - Réponse

It's almost certainly fine. Modern hard drives are very resistant to magnetic fields.

zschroeder6212 -

  • Lay your iMac stand-side down on a table.

  • Lift the front bezel from its lower edge and rotate it away from the rest of your iMac, minding the RAM arms that may get caught.

  • Lay the front bezel above the rest of the iMac.

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  • If necessary, remove the piece of kapton tape wrapped around the microphone and camera cables.

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  • Disconnect both the camera and microphone cables.

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  • Peel back the aluminum EMI shield up off the lower three edges of the rear case.

  • It is not necessary to peel the EMI shield off the display.

  • We found it helpful to tape the EMI shield up against the display to keep it out of the way.

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  • Remove the single T6 Torx screw securing the IR board bracket to the logic board.

  • The IR board and cable finger are now free from the logic board and may fall.

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  • Pull the IR Board cable connector straight away from its socket on the IR board.

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  • Transfer the two T6 Torx screws and the IR bracket to your new IR board.

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Conclusion

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

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