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Use this guide to replace the left speaker in your 21.5" Retina 4K Display 2019 iMac.
Some images in this guide use an older iMac, which has minor visual differences. These differences do not affect the repair procedure.
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crwdns2935267:0crwdne2935267:0iMac Intel 21.5" Cardboard Service Wedge$4.99
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With the hinge free to move, the iMac will be unbalanced and hard to work on. Place an iMac service wedge, in the stand to stabilize the iMac.
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Starting on the left side of the display, near the power button, insert the iMac Opening Tool into the gap between the glass panel and the rear enclosure.
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Use the tool like a pizza cutter—roll it along the gap, cutting the foam adhesive in between the frame and display.
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Run the tool up along the left side of the display.
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Continue running the tool up around the top left corner.
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Cut the adhesive along the top left of the display.
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Continue along the top of the display.
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Push the tool around the top right corner of the display.
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Push the tool down along the right side of the display.
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Finish pushing the opening tool to the bottom of the right side of the display.
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crwdns2935267:0crwdne2935267:0Plastic Cards$2.99
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Starting from the top right corner of the iMac, wedge a plastic card between the display and frame.
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Gently twist the plastic card sideways to create a gap between the display and frame.
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Move slowly and be careful not to stress the display glass too much—you only need to make a gap of about 1/4".
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Slide the card toward the center of the display to cut any of the remaining adhesive along the top right corner of the iMac.
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Wedge the plastic card into the top right corner once again, and leave it there to prevent the adhesive from resticking.
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Insert a second plastic card into the gap between the display and frame near the top left corner of the iMac.
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Gently twist the card upward, slightly increasing the space between the display and frame.
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Slide the plastic card toward the center.
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Wedge the plastic card back into the top left corner.
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With both plastic cards inserted as shown near the corners, gently twist the cards sideways to increase the gap between display and case.
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Begin to lift the top of the display up from the frame.
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Hold the display with one hand while using your other hand to unplug the display power cable.
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Continuing to support the display with one hand, flip up the metal retaining bracket on the display data cable.
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Carefully pull the display data cable from its socket on the logic board.
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Lift the display up to a near-vertical position.
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crwdns2935267:0crwdne2935267:0Plastic Cards$2.99
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Lift the display up from the frame and remove it from the iMac.
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It may be necessary to slowly lift from one side to peel against the remaining adhesive.
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Remove the following five Phillips screws holding the lower support bracket in place:
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Four 3.2 mm screws
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One 1.7 mm screw
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Remove the lower support bracket (a.k.a. "chin strap") from the iMac enclosure.
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Gently pull the fan cable connector straight away from its socket on the logic board.
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Remove the three 10 mm T10 Torx screws securing the fan to the rear enclosure.
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Gently pull the left speaker cable straight out of its socket on the logic board.
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De-route the left speaker cable by pulling it straight up out of the retaining clip in the back of the rear enclosure.
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Use a spudger to disconnect the power button connector from its socket on the logic board.
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crwdns2935267:0crwdne2935267:0Tweezers$4.99
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Remove the two 10.0 mm T10 screws securing the left speaker to the rear case.
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Lift the left speaker straight up, until the power button cable is exposed (about 0.5").
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Gently de-route the power button cable from its groove in the left speaker.
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Lift the left speaker straight up and remove it from the iMac.
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Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.
To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Check out our Answers community for troubleshooting help.
Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.
To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Check out our Answers community for troubleshooting help.
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We snapped the thin wire when taking out the left speaker as it got wedged in the gap. Is there a way to fix this wire?
