This is the circuit that HowardR was telling you about. One of those normally closed EOS switches on the drum units isn't opening to turn off the 100 pt. relay coil. Those n/c EOS switches are on the 100's score reels for each player. When the plunger is pulled in, it pushes the long leaf and opens the switch. Make sure those 4 switches are opening.
NR 100 pt (resized).JPG