[email protected] Get ahold of him. He is THE atari guy besides johns jukes <really expensive>. Cesar repaired my superman and had it back to me in a week. In-fact he had mine repaired the same day he got it. Very reasonable Johns jukes wanted a pretty high rate if it can be repaired and i got a standard flat rate with Cesar. I can not stress enough how good he is.
There are not many that will work on atari pins and parts for them are really scarce. I had a couple of coils out on mine and i can confirm the bally/Williams subs do work on the atari pins.

The problem if i remember right with the younger atari pins were the main boards were mounted in the lower box. There were some metal coil sleeves in them that would produce shavings and short the main board out. Give it a really good cleaning on the main board with air/keyboard duster and re seat all the connectors. I dont have any experience with your machine but heres what i can offer you. [email protected] or his website http://nuatari.com/

Awesome! glad it worked. Now check all the coil sleeves and make sure they do not have any aluminum or brass sleeves. I got my superman at a good price and put some work into it an am happy with it. Be extremely careful messing around the ribbon cable going to the score display. It carrys 90 volts and will give you a nice little tickle. Devise a way to keep from getting crap on the main board./

The game you are talking about is a Hercules. It was ataris last pin and i think to this date is the largest pin. It shares the same mpu as my superman and a few other things but that is it.