The Penberthy P60A MS‑91‑010‑2R1 is a dedicated industrial power‑supply module used in control panels and servo drive enclosures to convert mains input into regulated DC rails for the system’s logic and I/O circuitry. Common failure points on this board include burnt or failed MOSFETs/IGBTs, degraded capacitors, shorted output regulators, and damaged protection diodes that can cause over‑voltage spikes or thermal runaway. Begin troubleshooting by verifying the input voltage and polarity with a multimeter, checking for correct output rail voltages against spec, inspecting the board for visible signs of component damage or burn marks, and reviewing any diagnostic codes or error logs from the host controller that may indicate supply faults.[oss-gpt-20b]