Step 1: Dissasembly
1. Remove the four screws on the back side of the psp, plus two on the top and one on the bottom. The first four screws are identical, but the upper ones and lower one are different. Don't mix them up.
2. Lift the front cover. Pay attention to the start button, as it tends to fall off and wander away. Then, use a small clip or screwdriver to take off the home bar. Don't pull its cable, just take it off the screen.
3. Lift the screen and pivot it until you see the cables. Gently lift the tabs that hold the cables upwards and pull them off. Pull the home screen's cable upwards, then pull the cable off.
4. Remove the screen. Then, remove the screws nearby the triggers. After this, you can take both of the triggers out.
5. Remove the metal thingy that is located at the top edge of the psp.
6. Disconnect the dpad in the same way you disconnected the screen. Take the screw out as well. Remove any memory card and leave the access to the memory card fully open. Take the Dpad off. the R trigger button is slightly glued, but you can just peel it away.
7. Disconnect everything else from the motherboard and remove it by lifting the lower side up, then pulling it away.
8. Remove the metal shield (a thim metal sheet under the motherboard)