Issue: Lord of the rings resets mid-play, sometimes at start, sometimes after hours of play.
Solution: Checked voltage on CPU, found it to be 4,9 volts. Reseated all relevant power cables on cpu and power supply, still 4,9 volts. Used the poti R116 on the power supply to raise the voltage to 5,1 volts. Issue never occured again.
(picture taken from purcelvillepinball.com)