The SPELLMAN MX5PN48/713 is a high‑voltage switching power supply used to provide stable DC output for industrial and laboratory equipment such as X‑ray generators or precision test systems. Common failure points include the internal rectifier bridge, MOSFETs on the output stage, and the feedback control loop; symptoms often show as over‑temperature, output ripple, or loss of regulation. First‑check diagnostics: verify input AC voltage and filter capacitor condition, inspect for visible arcing or component discoloration, and measure the DC output with a multimeter while monitoring temperature rise. If the supply still fails, review any error codes on the unit’s indicator panel and test the control ICs against their datasheet specifications.[oss-gpt-20b]