You can follow a step-by-step guide for disassembling your PS4 found at https://www.how-fixit.com/laptop-repair-guides/game_console/playstation-4/ using a Torx T8/T9 and Phillips PH0/PH1 screwdriver and tweezers. The tutorial covers disassembly for cleaning and replacing thermal paste, as well as replacing components like the hard drive, power supply, or fan. Make sure to unscrew two screws at the back of the device and pay attention to thermal pads before removing the top cover PS4 case. Once disassembled, reassemble device by following the steps in reverse order provided in the tutorial.