CDJ-2000 jog wheel nudge and scratch behaves backwards

Ive got a CDJ 2000 with a jog wheel thats suddenly decided to behave backwards.

Nudge clock wise and it should speed up the song but now it slows down. Nudge anti clock wise and instead of slowing down the song it now speeds it up.

Same with scratching. In vinyl mode when you scratch you can actually see the digital needle in the jog wheel screen behaving backwards.

Does anyone know what this could be or a fix?