You checked the fuses? Did you check for power at the fuses with a DMM? Start with checking for the following voltages at the transformer module fuses:

F3: 3/8 amp slo-blo (95 volt AC DMD display power fuse) - vertical style fuse holder (often fails)
F4: 3/8 amp slo-blo (58 volt AC DMD display power fuse)
F5: 2.5 amp slo-blo (10 volt AC power supply). Goes to the 12 volt DC bridge rectifier.
F6: 10 amp slo-blo (16 volt AC for the CPU controlled lamps and switches). Goes to the 20 volt DC bridge rectifier.
F7: 8 amp slo-blo (50 volt AC solenoids). Goes to the 48 volt DC bridge rectifier.
F8: 10 amp fast-blo (6.3 volt AC backbox general illumination)
F9: 7.5 amp fast-blo (6.3 volt AC playfield general illumination)
F10: 3 amp slo-blo (12.6 volt AC auxiliary power supply)
F11: 3 amp slo-blo (12.6 volt AC auxiliary power supply)

Go across the "legs" - across the secondary coils of the transformer (or the input pins of the rectifiers, in either case you need to look at the schematics)