City Of Orange, NJ
I'm having the same problem - tried a new DMD controller, new ribbon cable, and reflowed ribbon connectors. Then I found this:
"The 74HCT273 at U201 on the CPU board buffers the output to the display controller via the ribbon cable. Should this IC fail, incorrect or no data will reach the display controller. Most of the time, this results in only the "splash screen" appearing which is displayed by the DMD controller on it's own, or in rare instances, the odd displays shown at left. First an over-scaled "Location ID:" image is displayed then "Bad Schematic Table Index!". This particular failure was caused by a corroded trace between U201 pin 2 and the via just northwest of pin 2. However, the same message may be displayed any time that the data path between U201 and the DMD Controller fails (i.e. poor header connections, failed ribbon cable)."
I am waiting for a new chip to see if this fixes it for me.
Update: totally fixed the problem. the old chip had a little burn spot which may or may not be related. Used a 74LS273 just because it was on hand, seems to work fine.
