The left and right bumper button PCBs can be slid outwards from their holders and placed out of the way as illustrated

The connector towards the middle of the main PCB is for the LCD. Detach the cable from this connector.

Gently lift the main PCB away from the front half of the controller shell.

The LCD cable needs to pass through the rectangular hole in the PCB so that the PCB can be completely freed from the controller shell

As seen in the picture, one of the small wires came free from the LCD connector. Taking a closer look at the pictures, the cable was never secured correctly from production, if you have issues with your Duke LCD, this might be a good place to start fault finding.

If this occurs to you, take note of how the other wires are installed into the connector and slide your loose wire back into the connector the same as the other wires. A click/snap should be felt once the wire has been securely placed back into the connector.