Astec MP6‑1Z‑1F‑1F‑1W‑4NN‑0M (73‑560‑7011) is a modular switching power supply rated 600/800 W with multiple IEC, XLR, and DIN outputs for industrial control systems. Common failure modes in this class include overheating of the internal MOSFETs or IGBTs, degradation of capacitors on the output rails, and failure of the main transformer winding due to mechanical shock or over‑current events. First‑check diagnostics: verify input voltage and polarity with a multimeter; inspect for visible signs of component burn or sagging capacitors; confirm that all output currents are within spec using an ammeter or scope; review any error codes displayed on the front panel or communicated via serial/Modbus to identify over‑current, short‑circuit, or thermal shutdown conditions.[oss-gpt-20b]