I just got a TZ via NAVL and when I plug it in and turn the machine on I just get random pixels on the DMD and the game doesn't do anything. When I press the flipper buttons I see the little lights flicker so I presume "some" boards have good power, but I'm not sure what the specific course of action is here. I took the DMD out and tried to make sure it was attached firmly, and also flipped up the playfield and tried to make sure everything looked cool and no connections had been jostled. Anyone know what's the problem with my machine? Like 20 random pixels in different locations when I turn the machine on.