Alrright. Well does anyone have any idea of the chips or anything related to the disk drive that I need to check. I know it's not the drive its self. Tried different drive. And its not the driver on the bottom of the board.

Hey. Needing some help finding a schematic for the scph1001 pu-8 motherboard. I have a ps1 that shows no signs of any response from cd drive. I have replaced the driver chip and still no response. I have noticed there's a light squeal from the PSU. I forget which pin it is at the moment. But one of ...