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iMac Intel 20" EMC 2105 and 2118 Heat Sinks Replacement

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Remove the following ten screws:

Eight 7.8 mm T8 Torx.

Two 6.1 mm T8 Torx.

If the eight screws around the processors refuse to unscrew, use a Phillips screwdriver to hold the lug from the one side of the board while you remove the Torx screw from the other side.

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