I thought it might have been a missing ball problem... not too sure whats going on there
until you said the flippers are active in attract mode.
the flippers should be a different problem from the random solonoids firing
The flippers could be a stuck relay, give all the relays a flick and try again, it the relay is stuck then the flippers will say active, (found that out a few weeks ago on Williams Flash
)
It seems like a real thinker
I'm sure someone can help you!
To aussiepinball by the way!