Introduction

Restore sound to your iMac by replacing the audio board.

  1. Loosen the single Phillips screw in the center of the access door.
    • Loosen the single Phillips screw in the center of the access door.

    • This screw is captive in the access door.

    • Remove the access door from your iMac.

    • The glass panel is fixed onto the front bezel with fourteen magnets around its perimeter.

    • Stick two suction cups to opposing corners of the glass panel.

    • To attach the suction cups we sell, first position the suction cup with the movable handle parallel to the face of the glass panel. While lightly holding the suction cup against the glass, raise the movable handle until it is parallel with the other handle.

    • If your suction cups refuse to stick, try cleaning both the glass panel and the suction cup with a mild solvent such as Windex.

    • Gently pull the glass panel straight up off the iMac.

    • The glass panel has several positioning pins around its perimeter. To avoid shearing these pins off the glass panel, be sure to only pull straight up during removal.

    • Be meticulous about cleaning the LCD and the inside face of the glass panel before reinstallation, as any fingerprints or dust trapped inside will be annoyingly visible when the display is on. Placing the glass flat, inside face down, on a fresh aluminum-foil surface is a good way to keep it clean.

    • Remove the following 12 screws securing the front bezel to the rear case:

      • Eight 13 mm T8 Torx.

      • Four 25 mm T8 Torx.

    • Disconnect the microphone cable connector, removing tape as necessary.

    • For the front bezel to sit properly, be sure to tuck the microphone cable and connector into the void next to the camera board.

    • Pull the LCD temperature sensor connector straight up out of its socket on the logic board.

    • If necessary, de-route the LCD temperature sensor cable from behind the logic board.

    • When you remove the LCD, check the routing of the LCD temperature display cable. On reinstalling the display, be sure this cable does not block one of the bottom screws for the front bezel.

    • Remove the two 5.3 mm T6 Torx screws securing the data display cable to the logic board.

    • Use the attached black tab to pull the data display cable connector away from the logic board.

    • Remove the eight 12 mm T8 Torx screws securing the display panel to the rear case.

    • Lift the display panel from its left edge and rotate it toward the right edge of the iMac.

    • With the display panel still lifted, disconnect the four inverter cables.

    • During reinstallation, place the four inverter cable connectors in voids between components attached to the rear panel so the display panel will sit flush.

    • During reassembly, the order of the inverter cables is interchangeable within each socket.

    • If you are replacing a hard drive and have an extra set of hands, it is possible to reach in and remove the drive without disconnecting anything but the LCD temp and display connector in the previous step with the LCD in its propped position.

    • Disconnect the right speaker cable connector from the audio board by pulling it straight up from its socket.

    • Remove the single 12 mm T10 Torx screw securing the right speaker to the rear case.

    • Gently lift the right speaker out of the rear case.

    • Disconnect the left speaker cable connector from the audio board by pulling it straight away from its socket.

    • Pull the connector parallel to the face of the audio board.

    • Move the antenna cables away from the audio board.

    • Disconnect the microphone cable connector from the audio board by pulling it straight up from its socket.

    • Using the tip of a spudger, flip up the audio to logic board ribbon cable retaining flap (toward the bottom of your iMac).

    • Pull the audio to logic board ribbon cable straight out of its socket.

    • There may be a piece of foil tape connecting the audio ports to the lower case. Refer to this step for removal instructions.

    • Remove the four 5.4 mm T6 Torx screws securing the audio board to the logic board.

    • After you remove these four screws, the audio board is free from all connections and may fall.

    • Carefully lift the audio board out of your iMac.

Conclusion

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

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