[SOLVED] My CDJ2000 NXS shuts off and restarts

Hi all I'm having an issue with one of my CDJ2000 nxs. 

My deck just restarts all by its self. 

This can happen when a track is being played and when not. Sometimes I've left it on the USB directory or a cd directory for ten minutes and gone back to it and its restarted with the Pioneer logo showing.. Ive just uploaded the latest updates and its not made any difference. My other deck is fine...