Remove two PH1 screws

Gently pull up on the ribbon retaining tab. Do NOT pull on ribbon. It will slide itself out in final step

Orange/Yellow steps only required if you need to remove the entire PCB

Gently pull up on the ribbon retaining tab. Ribbon is attached to underside of PCB via a sticky pad. Gently pull the ribbon away from pad

Desolder both points. Red (Left) Black (Right)

Gently press up on the PCB where you removed the two PH1 screws and rotate the board upside down

If your drive is "dead" this is where I would suggest replacing your electrolytic capacitors. There are 12 on the Thomson drive