Introduction
A 27" iMac is a great thing. A 27" iMac with a broken display is a great broken thing. Don't let a broken LCD get in the way of your iMac being awesome. Use this guide to help you replace the display in the 2010 27" iMac.
What you need
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Tool used on this step:Heavy-Duty Suction Cups (Pair)$14.95
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Stick a heavy-duty suction cup near each of the two top corners of the glass panel.
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While lightly holding the suction cup against the glass, raise the movable handle until it is parallel with the other handle (as indicated by the third picture).
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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.
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Pull the glass panel away from the lower edge of the iMac and carefully set it aside.
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Carefully lay the iMac stand-side down on a flat surface.
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Use a thin hooked tool to lift one side of the top edge of the display by its steel outer frame.
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Using your fingers, carefully pull the vertical sync cable out of its socket on the LED driver board near the top left corner of your iMac.
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Squeeze the two display data cable connector arms together to unlock it from its socket on the logic board.
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Pull the display data cable connector away from its socket on the logic board.
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Rotate the display out of the outer case enough to disconnect the LED backlight power cable from the LED driver board.
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Lift the display for enough clearance to disconnect the LCD thermal sensor cable connector from its socket on the logic board.
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Carefully pull the display toward the top edge of your iMac and lift it out of the outer case.
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