Sola Electric 81‑24‑180‑01 is a 115 VAC input, 24 VDC output power supply rated at 0.8 A, commonly used in industrial automation and control panels. Known failure modes for this unit include transformer winding insulation breakdown, rectifier diode burn‑out, and capacitor electrolyte leakage; the integrated over‑voltage, over‑current, short‑circuit, and reverse‑polarity protection can trigger if internal components fail. First‑check diagnostics: verify 115 VAC input voltage and continuity to the output terminals, test the output with a multimeter for correct 24 VDC under load, and inspect for visible signs of overheating or bulging capacitors; review any error logs from the host controller that may indicate power supply faults.[oss-gpt-20b]