Xantrex XPD 60‑9 is a 500‑W programmable DC power supply capable of 0–60 V and 0–9 A output, commonly used in bench, ATE, and rack‑mount test environments. Common failure modes for this model include overheating of the internal switching regulator, degradation of the output voltage/current sense resistors, and failure of the front‑panel control IC due to power surges or dust ingress. Typical symptoms are erratic output readings, a “regulation lost” fault indicator, or complete loss of output when the unit is powered on. First‑check diagnostics: verify that the mains supply is within spec and that the unit’s internal fuse (if present) is intact; inspect the front panel display and control buttons for continuity and correct operation; check the output terminals with a multimeter to confirm voltage/current setpoints, and review any error codes displayed on the LCD.[oss-gpt-20b]