You probably hooked it up wrong (hopefully). It should come up monochrome and then you update the firmware..
Make sure that you have the 12v cable running from the power driver board to the DMD hooked up (J-138).
Move it to the new game, reflash the firmware. If you get the INVALID KEY message, you'll need to unlock it.
How long have you had the ColorDMD?
If purchased before May 2013, read this: http://www.colordmd.com/Support_Keys.html
While this may not be your issue, it is worth mentioning.
Thanks for replies everyone.
Looks like the 12v unregulated fuse is blown on the power supply board. I do not have a spare so will pick one up tomorrow and report back.
Yes, the same display can be used in all supported WPC games by downloading and installing the appropriate color ROM file from our SUPPORT page.
Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside