The Nasscor 2401‑01 is a 15‑year‑old industrial power‑supply board that converts mains AC to the stable DC rails required by control or monitoring equipment. Common failure points on this model include degraded output capacitors, cracked transformer windings, failed rectifier diodes, and overheating of the onboard voltage regulator IC. Initial checks should verify input AC voltage and polarity, inspect for visible burn marks or bulging caps, and measure each output rail against spec while the board is powered; any deviation or noise warrants component replacement. If outputs are correct but downstream equipment still fails, check for shorted I/O lines or residual DC on control signals.[oss-gpt-20b]