As far as I know, and I was very careful to count ... I connected all cables that I disconnected. I did this whole thing 3 times ... same result. My best guess is a damaged circuit board. maybe I screwed it in too tight, maybe a flash of static electricity found it's way in ...who knows? As for now - I'm happy where it is. Someday I may open it up again, but it serves a purpose as it is. Sooooooo many screws. Who's got that kinda time?