The Apple TV has no visible screws or visible areas of entry. Therefore, we must first begin by using a metal spudger or two and inserting them between the rubber-coated base and the upper case

With some careful maneuvering, the Apple TV base should pop off.

A large pink square will be visible once the base is removed. This is the thermal pad.

The heat sink is the large black piece holding the thermal pad in place. The heat sink is metal and it’s purpose is to draw heat away from the chips inside the device.