Triple check connector A12J/P8 and the Q and T relays as stated above. A12J/P8 and the Q and T relays carry the voltage direct from the bridge rectifiers to their proper places. Those can often times get whacked by the service bar or by the playfield being raised and put them seriously out of alignment (and sometimes causing a nasty short in the 24v circuit). Is the sound working properly?

All the info you need to trace down your issue is on 38-39 & 41-42 of your manual.

Good luck. Let us know what you find.