Hey guys, running into an issue with this machine. The bottom half of the pf, speaker, score light, all bumpers and flippers are shorting out and popping breakers CB4 and CB2. I reset them and the unit works for 10-15 mins then shorts out and half the board goes dark. I tested the coils and the are all reading about 3.5 except the return bumper at the bottom which is at 10.5. Circuit board is clean and nothing looks burnt out. Diodes on the machine are all at 3. I have to reset both breakers to get it going. Any thoughts? I posted schematics and other stuff. Any help would really be appreciated!!!!