ANDRON NTG 0001 is a 200‑W industrial power module rated at 110/115 V AC, 50/60 Hz with a 250 VA output, commonly used as the supply for Andron control panels and servo drive enclosures. Typical failure modes include capacitor degradation or rupture in the filter bank, transformer winding insulation breakdown, and overheating of the internal rectifier bridge due to over‑current or poor ventilation. Initial checks should verify that the input voltage is within spec and that the output ripple remains below 5 % under load; inspect for bulging or leaking electrolytics, scorch marks on the PCB, and ensure all heat sinks are clean and properly mounted. If these pass, perform a continuity test of the rectifier diodes and measure the output DC voltage with no load to confirm correct regulation.[oss-gpt-20b]