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Installed a new Vishay DMD in Whodunnit...it doesn't work. WTF???

I took the good DMD out of my Whodunnit (Dale), and put it in a Lethal Weapon I sold. I then ordered a brand new Vishay from Pinballlife for the Whodunnit. I installed it yesterday and fired her up - completely no life. Kind of hard to mess it up since there are only two connectors - power and signal. Anyone have any ideas. The DMD has no life at all. It worked perfect with the other DMD.