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crwdns2935267:0crwdne2935267:0iMac Intel 21.5" Cardboard Service Wedge$4.99-
Before beginning any work on your iMac: Unplug the computer and press and hold the power button for ten seconds to discharge the power supply's capacitors.
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Starting on the left 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 through the gap, and it will cut the foam adhesive through the center.
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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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Wheel 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-
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, again stopping just before the iSight camera.
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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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Use a pair of tweezers to 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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While holding the display up with one hand, use the other hand to unplug the display power cable.
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Lift the display up to a near-vertical position.
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crwdns2935267:0crwdne2935267:0Plastic Cards$2.99-
Grasp the small tab at the end of one of the bottom edge display adhesive strips and pull the adhesive toward the top of the iMac to remove it.
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Repeat this step with the other adhesive strip and remove it.
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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 screws securing the hard drive bracket to the rear enclosure:
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Two 21 mm T10 Torx screws from the left-hand hard drive bracket.
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One 9 mm T10 Torx screw.
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One 27 mm T10 Torx screw.
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Remove the left and right hard drive brackets from the iMac.
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Lift the hard drive from the edge nearest the logic board and pull it slightly out of its recess.
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Use a spudger to disconnect the single SATA power and data combo cable.
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Peel the flexible hard drive sleeve off the top left corner of the hard drive.
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Continue peeling the hard drive sleeve off the adhesive securing it to the hard drive.
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Remove the sleeve from the hard drive.
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Hard Drive remains.
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Is there a problem with the fan if I install SSD?
Yes. There is a thermal sensor, which is going crazy after replacement.
And also have a problem with kernel_task after upgrade...
markeev -
is there a solution about the termal sensor and the kernel_task issue?
is there a solution about the termal sensor and the kernel_task issue?
i have the same problem, CPU 700 %…
I’ve run into the same thing: fans are running constantly with a new 1 TB 2.5” drive that I pulled from a 2012 iMac. I can use MacsFanControl as a 3rd party fix, but if anyone has a better (command line?) solution, I would be grateful!