Well this may or may not be related but....I've had various issues with mine. First 2 were related to an IC and bridge rectifier on the flipper control board, even though the problems were not flipper related.
Just recently I lost the FILM and PAID lights. No bad fuses, went to lamp test mode and when I activated those dead lights the CREATURE lights came on??? Did some digging around and it looks like my DMD board needs a HV rebuild kit ( just ordered the parts from GPE).
Try unplugging the ribbon cable from each board (flipper, audio, DMD) individually and see if the problem persists. If the lights come with 1 board out of the loop you narrowed it. It's how I found the DMD issue.