iMac Intel 21.5" EMC 2389 GPU Card Replacement

Replace the GPU card on your iMac Intel 21.5" EMC 2389.

Use this guide to replace the GPU card.

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Edit Step 1 Access Door  ¶ 

  • Lay your iMac face-down on a soft, clean surface as shown.

  • Be sure there isn't any dirt or debris on your work surface, as it may scratch the glass panel on the front of your iMac. We recommend placing a towel between the iMac and the work surface.

  • Loosen the three Phillips screws securing the access door to the bottom edge of your iMac.

  • All three screws will remain captive in the access door.

  • Remove the access door.

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Edit Step 2 RAM  ¶ 

  • Gently slide the black plastic RAM pull tab out from the RAM slot.

  • Pull the black plastic tab away from the bottom edge of the iMac to eject the module(s) on that side of the RAM bay.

  • This may require a bit of force.

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Edit Step 3  ¶ 

  • Slide the old RAM module(s) out of their slots in the RAM bay and set them aside.

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Edit Step 4  ¶ 

  • Repeat the process in the previous steps to remove the RAM module(s) from the other side of the RAM bay.

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Edit Step 5  ¶ 

  • When installing new RAM modules, it is important to orient them correctly.

  • Be sure the small notch cut into each RAM module (shown in the first picture) mates with the protrusion in each RAM slot (shown in the second picture).

  • Your iMac has four RAM slots. Be sure to slide each RAM module into its slot horizontally. This will prevent getting the modules stuck between two of the adjacent slots.

  • Once you have oriented the new RAM modules correctly, gently slide them completely into the iMac and use your thumbs to firmly seat them in their sockets.

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Edit Step 6 Glass Panel  ¶ 

  • Before beginning, unplug your iMac and lay it on a soft surface as shown.

  • Stick a suction cup near each of the two top 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.

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Edit Step 7  ¶ 

  • Gently lift the glass panel perpendicular to the face of the LCD enough to clear the steel mounting pins attached along the underside of the top edge of the glass panel.

  • Pull the glass panel away from the lower edge of the iMac and carefully set it aside.

  • During reinstallation, be sure to meticulously clean the inside of the glass panel and the face of the LCD as any dust or fingerprints trapped inside will be annoyingly visible when the machine is turned on.

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Edit Step 8 Display  ¶ 

  • Remove the eight 8 mm T10 Torx screws securing the display to the outer case.

    • The last two pictures are detail shots of each side of the display.

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Edit Step 9  ¶ 

  • Slightly lift the top edge of the display out of the outer case.

  • Do not lift it too much. There are several cables attaching the display to the logic board.

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Edit Step 10  ¶ 

  • Pull the vertical sync cable connector out of its socket on the LED driver board near the top left corner of your iMac.

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Edit Step 11  ¶ 

  • Rotate the display out of the outer case enough to disconnect the LED backlight power cable from the LED driver board.

  • Disconnect the LED backlight power cable by depressing the locking mechanism while pulling the connector away from its socket (toward the bottom edge of the iMac).

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Edit Step 12  ¶ 

  • Grab the plastic pull tab secured to the display data cable lock and rotate it towards upwards.

  • Pull the display data cable straight out of its socket on the logic board.

  • Do not lift up on the display data cable, as its socket is very fragile. Pull the cable parallel to the face of the logic board.

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Edit Step 13  ¶ 

  • Disconnect the LCD thermal sensor cable connector from its socket on the logic board.

  • If your fan is spinning full speed after completion, check this connection or the hard drive's thermal sensor cable.

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Edit Step 14  ¶ 

  • Carefully pull the display toward the top edge of your iMac and lift it out of the outer case, minding any cables that may get caught.

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Edit Step 15 Optical Drive  ¶ 

  • Remove the following four screws:

    • One 9.3 mm T10 Torx screw with a large head

    • Three 9.3 mm T10 Torx screws with a normal sized head

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Edit Step 16  ¶ 

  • Pull the optical drive thermal sensor connector toward the top edge of the iMac to disconnect it from its socket on the logic board.

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Edit Step 17  ¶ 

  • Lift the inner edge of the optical drive and maneuver its connector past the GPU frame attached to the logic board.

  • Carefully pull the optical drive off its mounting pins on the right side of the outer case to gain clearance for disconnecting the optical drive cable.

  • Allow the optical drive to hang down as you de-route the optical drive thermal sensor connector from behind the GPU heat sink.

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Edit Step 18  ¶ 

  • Disconnect the optical drive cable by pulling its connector away from the optical drive.

  • Remove the optical drive from the iMac.

  • Do not forget to also move the thermal sensor from the optical drive to the enclosure when you install the second hard drive.

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Edit Step 19 Optical Drive Fan  ¶ 

  • Remove the single 13 mm T10 Torx screw securing the optical drive fan to the outer case.

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Edit Step 20  ¶ 

  • Pull the optical drive fan off the pins attached to the outer case.

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Edit Step 21  ¶ 

  • Pull the optical drive fan connector out of its socket on the logic board.

  • Remove the optical drive fan from the iMac.

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Edit Step 22 Logic Board  ¶ 

  • In the proceeding steps, you will disconnect the following cables:

    • SD Board and microphone

    • Left/Right Speaker

    • Wi-Fi Antenna

    • Bluetooth/Ambient Light Sensor/Camera/Left Temperature Sensor, Hard Drive Temperature Sensor and Hard Drive Fan

    • CPU Fan/Ambient Temperature and Power Button

    • IR Sensor

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Edit Step 23  ¶ 

  • Pull the microphone cable connector toward the top edge of the iMac to disconnect it from the logic board.

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Edit Step 24  ¶ 

  • Pull the SD board cable out of its socket on the logic board.

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Edit Step 25  ¶ 

  • Disconnect the left speaker and right speaker cables by pulling their connectors toward the right side of the iMac.

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Edit Step 26  ¶ 

  • Use the flat end of a spudger to pry both AirPort antenna connectors up from their sockets on the AirPort board.

  • The gray antenna attaches to the socket on the left and the black antenna attaches to the socket on the right.

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Edit Step 27  ¶ 

  • Disconnect the hard drive fan by pulling its connector toward the top edge of the iMac.

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Edit Step 28  ¶ 

  • Pull the hard drive thermal sensor cable out of its socket and toward the top edge of the iMac to disconnect it from the logic board.

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Edit Step 29  ¶ 

  • Use your thumbnails on both sides of the Bluetooth/ambient light sensor/camera/left temperature connector to push it toward the top edge of the iMac and out of its socket on the logic board.

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Edit Step 30  ¶ 

  • Pull the CPU fan/ambient temperature sensor connector toward the bottom left edge of the iMac and out of its socket on the logic board.

  • Pull the power button connector toward the bottom left corner of the iMac to disconnect it from its socket on the logic board.

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Edit Step 31  ¶ 

  • Remove the piece of tape covering the IR sensor cable.

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Edit Step 32  ¶ 

  • Use your thumbs to push the IR sensor connector out of its socket and toward the top edge of the iMac.

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Edit Step 33  ¶ 

  • Pull the IR sensor board up from behind the front face of the outer case.

  • Remove the IR sensor and set it aside.

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Edit Step 34  ¶ 

  • Remove the following seven screws:

    • Two 7 mm T10 torx screws

    • One 30 mm T10 Torx screw

    • Two 25 mm T10 Torx screws

    • Two 21 mm T10 Torx screws

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Edit Step 35  ¶ 

  • Remove the following four screws:

    • One 9.3 mm T10 coarse-threaded screw

    • One 25 mm T10 coarse-threaded screw

    • Two 22 mm fine-threaded screws

  • Pull the upper right and lower left corners of the power supply away from the rear case to dislodge the mounting posts attached to the power supply's corners.

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Edit Step 36  ¶ 

  • Carefully lift the power supply out of the outer case and rotate it to expose the cable lock as shown, minding the DC-out and AC-in cables still attaching it to the iMac.

  • Disconnect the DC-out cable by depressing the locking mechanism on the connector while you pull the connector away from its socket on the power supply.

  • Once the locking mechanism has cleared the socket, pull the DC-in connector away from the power supply.

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Edit Step 37  ¶ 

  • Disconnect the AC-In cable by depressing the locking mechanism while pulling the connector away from its socket.

  • Remove the power supply from the outer case.

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Edit Step 38  ¶ 

  • Remove the plastic wall that is installed directly to the right of the LED driver board.

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Edit Step 39  ¶ 

  • Remove the plastic pressure wall installed next to the hard drive.

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Edit Step 40  ¶ 

  • Slightly pull the logic board away from the back of the outer case, then lift it upward to clear the lower front face of the outer case.

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Edit Step 41  ¶ 

  • Disconnect the audio port cable by pulling its connector away from the front face of the logic board.

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Edit Step 42  ¶ 

  • If present, peel off the tape securing the hard drive SATA cable to the logic board.

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Edit Step 43  ¶ 

  • Depress the locking mechanism and carefully pull the DC-In cable out of its socket on the back of the logic board.

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Edit Step 44  ¶ 

  • Being careful not to damage the socket on the logic board, gently pull the hard drive SATA data cable straight out of its socket on the logic board.

  • Remove the logic board, minding any cables that may get caught.

  • When reinstalling the logic board, plug in a mini display port cable and a USB cable into the outer USB port before tightening the logic board screws to ensure proper alignment.

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Edit Step 45 GPU Assembly  ¶ 

  • Remove the strip of tape securing the GPU thermal sensor cable to the logic board.

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Edit Step 46  ¶ 

  • Remove the following three screws:

    • One 4.2 mm T10 Torx screw

    • Two 5 mm T8 Torx screws

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Edit Step 47  ¶ 

  • Grab the GPU thermal sensor cable connector and pull it straight up and out of its socket on the logic board.

  • Do not pull the connector out by its cables.

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Edit Step 48  ¶ 

  • Lift the GPU heat sink slightly and pull the GPU board out of its socket on the logic board.

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Edit Step 49 GPU Card  ¶ 

  • Remove the four 6.5 mm T8 Torx screws securing the GPU heat sink to the GPU.

  • It may be necessary to use a #1 screwdriver to hold the sockets on the GPU heat sink stationary as you loosen the T8 Torx screws.

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Edit Step 50  ¶ 

  • Remove the clamping bracket from the back of the GPU.

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Edit Step 51  ¶ 

  • Remove the GPU from the GPU heat sink.

  • Make sure to apply a new layer of thermal paste to the face of the GPU (the area boxed in red) before reattaching the heat sink. Our thermal paste guide makes it easy.

  • Before installing new thermal paste and mounting a new GPU to the GPU heat sink, use the flat end of a spudger to push the VRAM thermal goop closer together so it will better contact the VRAM when the GPU is installed.

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

For more information, check out the iMac Intel 21.5" EMC 2389 device page.

Required Tools

TR8 Torx Security Screwdriver

$5.95 · 50+ In stock

Spudger

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Heavy-Duty Suction Cups (Pair)

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Phillips #2 Screwdriver

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Arctic Silver Thermal Paste

$8.95 · 50+ In stock

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Comments Comments are onturn off

Hi everyone,

Which GPUs can you use as upgrades for this 2010 model? Mine has a Radeon 5670 512mb and I'd like something a bit more powerful...

Thanks!

Tom Edkins, · Reply

Before beginning unplug your iMac.

Henry Barnett, · Reply

i pulled very hard on this tab, could not get it to release?

is this common?

Arjun Govindjee, · Reply

It is far harder than I thought you have to pull REALLY hard and then there will be a little click and than you can gently pull out the RAM.

Alison Newton , · Reply

When reinstalling RAM in this machine or any iMac with upgradable RAM slots push hard to get them to go in (Apple really did make this one harder than it needed to be). If you don't push hard it won't go in and your computer won't work. (trust me on this learned the hard way)

Robert Wacker, · Reply

Change "Before beginning, unplug your iMac and lay it on a soft surface as shown." to "Lay your iMac on a soft surface as shown"

Henry Barnett, · Reply

my imac power sullye not powering

tahir, · Reply

imac 2544 2.5 core i5 i touched the motherboard to supply and it spark now it is not powering

please tell me the directions

thanks witting for answering .

tahir, · Reply

Im sorry to say, If it sparked when you touched it your motherboard s now fried. You need a new one.

Robert Wacker,

Do not try to pull the plug off the circuit board as it's soldered. Pull the cable sideways out of the socket.

Alex Campbell, · Reply

This cable is very short, I would remove it before any of the others. First time I did this, I didn't realize this and this cable just popped out of it's socket. Luckily, the board wasn't damaged.

maccentric, · Reply

i damaged my (step7) cable, and my iMac screen won't work, how to fix this?

Ersan Rasubala, · Reply

I did the same thing. The pins are VERY easy to bend. I replaced it with a new cable from this company.

http://www.macpalace.com/922-9497-cable-...

Waiting for it to arrive.

Michael,

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