Switching Systems International 30‑0041‑001 is a modular industrial DC power supply used in servo drive and control systems, typically providing regulated outputs up to 48 V with built‑in protection features (over‑current, over‑temperature). Common failure points for this class include the AC input rectifier/bridge, main switching MOSFETs or IGBTs, output voltage regulator ICs, and fuse or thermal cut‑out devices. Begin diagnostics by verifying the incoming mains voltage and checking the input filter capacitor ESR; then measure the output rails under load to confirm regulation and look for any over‑current shutdown indications on the LED status panel. Finally inspect for obvious signs of component failure such as burn marks, swollen electrolytics, or loose solder joints before proceeding with further module replacement.[oss-gpt-20b]