Quoted from Bax1:
Both q1 & q5 test good. Could these be tied to one of these little boards underneath the playfield?
How did you test the transistors and particularly Z4?
The lower left dome flasher lamp next to the left slingshot is on the same circuit as the upper left dome flasher lamp. Are both those left dome lamps not working?
It looks to me like the ramp coil has some sort of End Of Stroke (EOS) switch associated with it that's activated by movement of the ramp. Is that switch operating properly when the ramp is down and up? I guess the switch should be normally closed so the coil has higher power to lift the ramp.
What happens when you very briefly ground the base leg of transistors Q5 and Q1? Do their respective lamp/solenoids flash/activate?