The lights on the playfield and the back board stopped flashing on and off. About a year ago I replaced the backboard relay and one of the playfield relays along with a new Pin Score power supply and every thing worked great. I decided to add some post LEDs around the sling shots and that is when everything went haywire. The lights stopped flashing on the playfield but still worked on the backboard and then vice a versa. I disconnected the LEDs I installed, and after about a week of playing everything went back to normal, so I thought. It started again and now none of the lights flash on and off. I'm wondering if it's the relay on the circuit board or a problem with the power supply.