Hello, I don't know what the cause of your issue is, but please help by not randomly replacing parts.

When you replaced the drop target, did you replace any of the switches? Check the diodes on the drop target switches and other nearby switches under the playfield, to verify they have not been inadvertently pushed into contact with any metal surfaces or wiring. Your problem sounds like some sort of short to me.

Best regards,

Tom

When you replaced the drop target, did you have to remove any coils? When reinstalling the coils, you need to make sure they are properly oriented, so that the metal tabs on the coil are not making contact with the metal bracket that holds them.

I myself have made the unfortunate mistake of poking around the bottom of a playfield only to inadvertently close a switch, or bend a diode on a switch into the switch wire. I'm not saying that is what is going on here, but again, it sounds like a short on something. I lean towards the cause of the DMD not working being the result of some sort of failure in the CPU caused by a playfield short.

It seems like the Lauren Belle relay is involved. Just follow the wires on that relay to make sure that nothing has gotten pinched.

Good luck,

Tom