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iMac G5 20" Model A1145 IR Board Replacement

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Replace a faulty IR board to restore control of your iMac with an Apple remote.

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  1. iMac G5 20" Model A1145 IR Board Replacement, Access Door: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Orient the iMac face-side down on a table with the bottom edge facing yourself.

    • Remove the two Phillips screws securing the access door to the bottom grille of your iMac.

    • The screws are captive in the access door.

    • Before beginning the repair, unplug the computer and press and hold the power switch for 20-30 seconds, to discharge internal capacitors.

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  2. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the access door.

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  3. iMac G5 20" Model A1145 IR Board Replacement, Front Bezel: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the three T8 Torx screws securing the front bezel to the rear case along the lower edge of the iMac.

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  4. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Turn the computer over.

    • 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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  5. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • 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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  7. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
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    Plastic Cards
    $2.99
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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 near 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.

    • Alternatively, you can use a strong magnet by holding it to the front top left/right corner of the display. You will hear a snapping sound when the hatch is released.

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  8. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • 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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  9. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

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

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  10. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:09crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:09crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Disconnect both the camera and microphone cables.

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  11. iMac G5 20" Model A1145 IR Board Replacement, Lower EMI Shield: crwdns2935265:010crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Peel the lower EMI shield off the lower edge of the iMac and off the two vertical 4" sections on either side of the iMac.

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

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  12. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:011crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Tape the lower EMI shield up against the face of the display to keep it out of the way while you work.

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  13. iMac G5 20" Model A1145 IR Board Replacement, IR Board: crwdns2935265:012crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Disconnect the IR board cable by pulling its connector toward the left edge of your iMac.

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  14. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:013crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the two T6 Torx screws securing the IR board to its metal bracket.

    • Hold the IR board as you remove the last screw, as it may fall.

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  15. iMac G5 20" Model A1145 IR Board Replacement: crwdns2935265:014crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the IR board from your iMac.

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

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