A lamp on the mystery wheel lights when a new bulb (LED) is fitted, then goes out again, and the bulb tests dead in another socket.

One lamp works after a new bulb then fails again: bad lamp socket

Cause: The lamp socket itself was faulty.

Checks

• Measure the voltage at the socket and compare with a working socket of the same type.
• Inspect the socket contacts and solder joints.

Fix

• Replace the lamp socket.

Systems

• Williams System 11B

Games

• Cyclone

Related tips

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• Lamp flickers or is out with a good bulb

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