The Diner I'm working on had an AC Relay error in test mode. All flashers were working in test but some weren't during game play. I replaced U1 and the error went away. However, now the cup flashers aren't working. Everything else seems to be working fine.

I have tested all the parts in that particular circuit and they are testing good (Q23, D40, Q2 etc). I don't seem to be getting voltage to the cup flashers during test mode but will verify again.

This is the weird part and where I could use help. I have continuity between ALL of the flashers!! I don't think this is expected but I'm not sure?
If this is not expected, I must have a short somewhere on the playfield but I wanted to check in with the experts here.

I ended up finding the issue. It was R6 on the interconnect board. Someone put the wrong value cement resistor there. They doubled up two 10 ohm resistors to make 5 ohms. The resistor is supposed to be 3 ohms. Replaced it and the cup flashers are working again.