I’m a Denon prime series user since 3 weeks ago. Last night I was at home preparing a session with my SC5000Ms & X1800 and everything it was ok until I realised that one of the screens (the one on top) was completely black… no info at all. The bottom one is ok. The problem is still there. Have anyone had the same issue?? Or know how to solve this? Thank you all. Javier.