Hello I havent been on here in a while since I finished restoring my Lost World. I just came into a problem. When I turn the machine on everything works, sound, solenoids, lights, scoreboards, etc...... but when I got hit the start button, nothing happens. I thought I might have been the diode on the switch. It was a 1n4004 but all I had was a 1n4007 soooo I swapped it out anyways and nothing happened. I traced both wires going to the backbox. And 1 wire going to the MPU J3 2 down. And the other wire goes to the MPU J3 3rd from the bottom. I also tested DC voltage on the wires from the switch and im getting only 1.5.