Not sure if its best keeping all this in your other project thread? I recall in the other thread something about a neckboard missing or not attached? is that still the case because obviously that will result in no image.
can't offer much helpful input on anything else as fortunately my model 2/3 stuff worked as is and so never had to do any real fault finding on them. What I will say though is I noticed these cabs are just 'loud' the fans just go full pelt with no speed control as such, my model 2 boards (daytona) got very warm.