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| - | [* red] Remove the four 3.5 mm T5 screws securing the heat sink to the logic board. |
|---|---|
| - | [* black] Grip both ends of the heat sink and lift it up from the logic board. |
| + | [* red] While pressing down on one end of one of the heat sink spring metal retaining straps above or below the CPU, use your other hand to remove the 3.5mm T5 screw from that end. This will prevent the screw from flying away as the tension on this end of the strap is released. Then remove the screw from the other end of the strap, and lift out the strap. |
| + | [* red] Repeat the process above for the heat sink's other spring metal retaining strap. |
| + | [* red] Note that some 15 Inch Macbook Pro models have two GPU chips, with the second (discrete) GPU located externally from the CPU and its integrated GPU chip. The discrete GPU chip will be located between the CPU and the opening for the left-side fan, and will have another heat sink cover plate and four 3.5mm T5 screws to release it. |
| + | [* black] Grip both ends of the heat sink, wiggle it slightly in its horizontal plane to break the bond of the thermal paste, then lift up the heat sink from the logic board. |
| [* icon_reminder] When installing the new heat sink, remember to [guide|744|replace the thermal paste] underneath the heat sink. | |
| + | [* icon_reminder] Also note that the heads on the screws that hold down the ends of the heat sink's spring metal retaining straps won't bottom out, due to the collar on each screw, so don't apply too much torque to these screws in an attempt to bottom them out. Also, applying too much torque can break the glue holding the metal standoffs to the logic board. |