Ok so I had a catastrophic Transistor failure (there was a lot of smoke).
The Diode for one of the pop bumpers broke off and the coil melted which lead to it's transistor melting as well.
Fixed diode coil and the big and little transistors associated with that coil.
Some second order problems have appeared: None of the special solenoids will fire and the left sling is stuck on at power on. Also the relay that makes the solenoids work during play is chittering, but eventually engages. The flippers work when the relay is done chittering. Further none of the flash lamps work.
Should I replace just the transistor for the sling? Does one stuck coil transistor make all the other ones not work? It looks like the flash lamps are somehow special solenoids too...