I'll be brief with this as the install is much more involved than just this head unit. I have a Pioneer AVH-X1500DVD that I've completed broken down. My question specifically is would it make sense that the screen would turn on for a moment and then go black if I removed the cd/dvd player? I disconnected it for space purposes and am trying to understand why it won't turn on now when I had tested last night and it worked fine. Any suggestions are appreciated and if more info is needed and I can provide it. Thanks!