The 10-point chime rings at power-up and in solenoid test, and all the 10-point switches work in switch test, but the chime never rings during a game.

10-point chime silent in play but fine in test: chime wire on the wrong pin

Cause: The chime's drive wire had been put on the wrong pin of the solenoid driver board connector (J2), probably during earlier repinning.

Checks

• Compare every wire on the solenoid driver J2 connector with the wiring chart in the manual, pin by pin.

Fix

• Move the chime wire to the pin the manual calls for.

Systems

• Stern MPU-100

Games

• Stars

Related tips

• Burnt pins at solenoid driver J3
• All displays dark after fitting a new power supply: blown solenoid driver board fuse

Source: Pinball Repair help group!! (Facebook group)