Arcade machines require regular hardware stress testing to ensure optimal performance and longevity in commercial environments. The most common diagnostic procedures include comprehensive power supply testing, where technicians measure voltage outputs under load to identify fluctuations that could damage sensitive components. Monitor stress tests involve displaying specific grid patterns and solid colors to detect burn-in, color decay, and convergence issues on CRT displays. For printed circuit boards (PCBs), thermal stress testing is crucial - operators run games continuously while monitoring chip temperatures and checking for graphical artifacts that signal overheating. Input device endurance testing involves automated button actuation cycles and joystick movement patterns to verify switch reliability and detect worn microswitches. Memory tests using dedicated diagnostic ROMs help identify failing chips by writing and verifying test patterns across all addressable memory. Coin mechanism validation tests ensure proper credit registration and mechanical operation through repeated coin insertion simulations. Many operators also conduct environmental stress tests by subjecting cabinets to varying temperature and humidity conditions while monitoring performance stability. These systematic hardware evaluations help arcade technicians identify potential failures before they impact gameplay, reducing downtime and maintenance costs while preserving the authentic arcade experience for players. Regular stress testing is particularly important for vintage machines where component aging can lead to intermittent failures that are difficult to diagnose during normal operation.