Maintaining optimal performance in arcade machines requires specialized hardware monitoring tools. The most common types include digital multimeters for precise voltage, current, and resistance measurements in power supplies and PCB connections. Infrared thermometers and thermal cameras are crucial for identifying overheating components like processors and power transformers, preventing long-term damage. Logic analyzers help diagnose complex digital signal issues across multiple chips simultaneously. Dedicated JAMMA testers provide comprehensive input/output verification for game boards and control interfaces, while power supply testers ensure stable voltage delivery to all system components. For mechanical monitoring, specialized tools track joystick sensitivity, button response times, and coin mechanism reliability. Modern solutions often incorporate IoT sensors that transmit real-time performance data to centralized dashboards, enabling predictive maintenance. Regular hardware monitoring significantly extends cabinet lifespan and reduces operational downtime.