No responses to my SW display issue, but no worries, let's try something else that makes the display issue take a back seat:
My Sega Star Wars Trilogy has picked up an annoying fault. Turn it on, get the "bloop", playfield lights come on, then after a couple of second, before anything else happens, the relay on the I/O Power Driver Board clicks, LED 204 comes on and stays on and the playfield lights die. Nothing else happens. All LEDs on the I/O and CPU/Sound board are lit so I have the power where I need it and it tests at a fraction over 5v where on the test point.
I've removed the various ROM modules and given them and their sockets a visual inspection and all appears OK. Tests in bridge rectifier 21 showed something was amiss so I replaced it only to find out when off the board it tested fine :/ I can't see where the issue is and there is very little I can find online to point me where to look next. Any ideas?