Technical background in:
Electronics
Electrical systems
Computer hardware
Knowledge in electronics repair
Wiring & electrical troubleshooting
Mechanical fixing
ticket dispensers, motors
Computer basics
Arcade machines run on PC systems
Electrical systems
Wiring, circuits, motors, sensors
Mechanical systems
Gears, bearings, hydraulics, pneumatics
Troubleshooting & diagnostics
Identifying faults quickly
Basic electronics
Control boards, PLC basics