The Hitron HV1216‑40 9736 is an industrial AC‑DC switching power supply that delivers a regulated 12 V output at up to 16 A, commonly used in compactPCI and other embedded systems. Common failure modes for this class of units include overheating or burnout of the internal MOSFETs, failure of the main transformer winding, degradation of the filter capacitors, and loss of protection circuitry (over‑current/over‑temperature). First‑check diagnostics should verify that the input voltage is within spec and that the PSU’s output voltage and current are stable under load; inspect for visible signs of component damage or thermal stress, and review any status LEDs or error codes displayed on the unit.[oss-gpt-20b]