: Over time, the "white gear" or metal tangs holding the laser can shift. Small manual adjustments to these components can help the laser find its focus again.

: Grinding noises are typically caused by the laser arm losing its grip on the worm gear. Repositioning the metal clip (the "tang") often silences the grind.

: The PS2 has several tiny surface-mount fuses (labeled PS1, PS2, etc.) on the motherboard that can blow during a power surge.