I haven't had time to do much investigating on my end (yet), but yesterday I bumped settings from Factory to Hard. Within 10 seconds of my first game, the game freaked out (a barrage of callouts indicating switch hits, 2 balls ejected from the trough into shooter lane, Color DMD went dark, and flippers stopped working).
I shut the game down and turned it back on. Color DMD still dark and some GI is out. The game appears to boot though (starts up, bongs once, then the insert lights come on and go into attract mode). The start button does not work... the internal menu controls do work (at least I can hear myself scrolling through menu controls when buttons are pressed).
Upon Boot, the MPU board lights are: bottom solid, middle constant flash, top off.
I'm confused... this is a game with a solid operating history. Was working fine yesterday until I changed settings.
Anyone have any thoughts?