Before touching any component, verify that the unit is disconnected from power. Once all screws are removed, the front and back casings usually remain locked together by plastic tabs along the sides.
Xbox 360 Power Supply Model Identification Guide
The security screws on these units are either five-point Y-type or Torx T5/T6, and standard Philips screwdrivers will not work. If you are dealing with an Xbox One or Xbox Series X, the plugs are completely different, and this specific guide does not apply.
Microsoft placed these screws specifically to deter casual repairs, so you must apply firm pressure while turning to avoid stripping the heads. However, if the board shows signs of scorching or blistering, the unit likely needs to be replaced entirely, as repairing internal traces requires advanced equipment.
Identifying Your Xbox 360 Power Supply Model
Locate the cable connecting the power supply to the console itself; this is usually a thick piece of wire that clips into the board via a white plastic connector. Look for the model number "APM-06" or "APM-12" printed on the underside; this ensures you have the slim version that matches the teardown steps outlined here.
More About Xbox 360 power supply teardown
Looking at Xbox 360 power supply teardown from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on Xbox 360 power supply teardown can make the topic easier to follow by connecting earlier points with a few simple takeaways.