When I removed the filter board from my Galaga PCB , it had a yellow ground strap attached to it. I don't see anywhere on the PCB to attach the ground strap...is there something I am not seeing?
The strap usually don't go directly to the boards. A ground wire in the harness would be where it gets it's ground from. Straps usually for for what mitchschaft states, the 110v filter and anything else metal in the cabinet.