Carl Lewis MOT20 Treadmill, monitor?

Hello, Does anyone know how to fix the monitor (computer) part of the treadmill,. The treadmill itself is fine, and the lights along the top which light up to show your different speeds, but non of the display works on the left hand side, the timer, pulse rate etc. It stopped working a while ago, then started again, then just went off. I was thinking maybe it was a lose wire, but dont know where to look, or people on here have mentioned a fuse, i dont even know where one is, i cant find it, would be grateful for any help.