Blog — troubleshooting

Hope everyone is staying well and have taken the opportunity to get vaccinated when they can.  One of the most asked questions we get is Why do my coils activate out of sequence in self-test and game play or some activate several times and others don't.  Let me first go through the schematic side of this question.    There are 8 signal lines that come off the J4 connector on the MPU board.  Four of the lines are binary address outputs for the momentary solenoids and operate solenoids 1-14 and 16.  The other four signal lines are for the continuous...

I thought it was time for another story. Recently, I had been communicating with a customer that was having issues with one of my boards.  He had purchased my Trifecta, which is the replacement MPU, Solenoid, and LED/Lamp Driver board set. He had installed them in a Bally Mystic machine. I also should say he had purchased these boards months ago from one of my dealers. The customer said whenever he would ground the lamp board with one of the mounting screws, the game would have a boot up issue. I worked with him over the phone and thru emails/text for...