Parts common to solenoid-driven score reels

Each reel has an advance solenoid and a zero switch that opens at zero. Most also have a nine switch that closes at nine to carry into the next reel and a coil EOS switch, and some have a circuit board with a rotating wiper for match and high-score sensing.

Systems

• Electro-mechanical

Related tips

• Score reels by maker
• Check a score reel mechanism
• How the score motor resets the reels
• Clean the score reel relays
• Bally score reel relays
• Find out if score reels are stopping the start-up
• Service Midway motorized score reels
• Gottlieb rat trap and decagon score reels

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part One, Clay Harrell (pinrepair.com)