Xdj rx2 Screen Turning Off

My XDJ-DX2 has developed a hugely annoying problem, where the screen either doesn't turn on when I switch the unit on, or it suddenly turns off whilst playing. Everything else works as normal and the music keeps playing etc, but the screen is totally off and doesn't come back on. I've tried updating the firmware but the issue is still there. It sometimes takes 5 to 10 times of turning the unit on and off until the screen eventually comes on with it, and then after anywhere between 10 minutes to an hour the screen will turn off. Any ideas? Cheers, dom