This Williams System 11A has me chasing my tail. Figured I'd post before I dig deeper just to see if anyone ran into this before. I have 1 pop bumper working and the other two will register and set off the flash lamps when the switch is engaged, but no coil action. For the heck of it I did a complete rebuild of one of them. New coil, sleeve, and switch nothing. Found a transistor cooked (might have been from me poking around on the main board) so that was replaced. Looks like the chip that sends signal to them has been replaced before as I see a trace on it from leg to leg. I also have an issue with 2 of the lamps in the helmet when opened. 2 of those are out. Changed the ceramic resistors on the flash lamp pcb underneath but nothing. Just figured I'd toss it out there and see if anyone ran into this before.. Thanks!

Thanks for the input! Power on both lugs on all jets. I think I was reading 17 something. In test mode top jet and left jet go off but bottom jet nothing. In game play only top jet responds to the ball hitting it. All jets will respond to points if I tap the switch from underneath the PF. Logic?