Bally Mr. & Mrs. Pac-Man Pinball (Bally, 1982) Mpu issues or something, please help.

[wannabefishguru]

Hey guys I need some help. I got this Mr. and Mrs Pacman with a as 2518-35 mpu that is suppose to be 100% working with new 2732 rom and has been jumped properly. The machine has a new Alteck solenoid/voltage regulator board. I can not get this mpu to flash at all, it is stuck green and I can't go. I also had another mpu board that originally came with it and I put in memory, cpu, rebuilt the corrosion area and still stuck led. What is going on.

Please and Thank You,

wannabefishguru

 

[wannabefishguru]

HOLY COW, I'm and idiot, Apparently the band U2 never showed up for the party cause they were parked in U1. In other words I put eprom U2 in U1 spot. But on the other hand my original board that I worked on still doesn't work.

Now I can't get the service switch to work, any ideas to bypass it to diagnose without it? like crossing wires?

 

[wannabefishguru]

the connector for the mpu board; the bottom right J connector for some reason is not making connecting with the pins on the board. I have rebuilt the connector and switched it over to molexes and gave the pins on the board a light sanding to clean them up but that doesn't make any connection. any help will be nice. I can bypass the connector and touch the resistor with a wire and it works fine and i have checked the wiring and it is good, even at the door connector. any ideas?

 

[spalmer]

Sanding is not a good idea. Better to repin the board.