I have a monopoly with a weird set of coil problems.
I was testing coils to make sure they were working (my up kicker from the out hole was not. ) I grounded the tab of Q 3 to the panel of the back of the game. As soon as I did that the lower left pop bumper coil started locking on and staying locked on. Definitely an "I made the problem worse" moment. I thought I blew the transistor, but it tests fine.
Now when I try and start a game even with that coil disconnected no other coils fire. The fuses test as good. No shorted transistors. Any other thoughts?