The game resets and serves a ball, but no pop bumper, sling or other playfield coil fires.

Game resets but no playfield solenoid works

Cause: Playfield solenoid power passes through a switch on the hold relay and a switch on the ball count unit. The ball count unit opens that switch at its zero and game-over (6) positions, so if the switch doesn't close when the unit steps to ball 1, nothing on the playfield gets power.

Checks

• Check the playfield-solenoid switch on the hold relay.
• With the ball count unit on ball 1, check its solenoid power switch closes.

Fix

• Clean and adjust whichever switch stays open.

Systems

• Electro-mechanical

Related tips

• Renew sleeves on flipper, pop bumper and sling coils
• Strengthening pop bumpers by removing coil windings
• How an EM pop bumper works
• Rebuilding an EM pop bumper
• Pop bumper stays on after the ball hits it
• Converting an EM flipper or bumper coil to DC
• Pop bumper armature links: which to use and how they go together
• Making pop bumpers kick harder

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