Introduction
Parts
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De-route the fan cables from the plastic finger molded into the heat sink.
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Disconnect the fan from the motherboard.
 
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Lift the memory card reader out of the PS3 enough to access its ribbon cable.
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Flip up the retaining flap on the memory card reader ribbon cable socket.
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Pull the ribbon cable out of its socket and remove the memory card reader.
 
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Lift the power supply by its front edge to clear the two posts attached to the motherboard.
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Remove the power supply.
 
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Remove the four 16.5 mm shouldered Phillips screws securing the heat sink to the motherboard.
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Remove the two brackets held under the screws you just removed.
 
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Lift the motherboard assembly off the heat sink.
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Be sure to apply a new layer of thermal paste when reattaching the heat sink.
 
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To reassemble your device, follow these instructions in reverse order.