The Picano BE310253 is an industrial IPS (Industrial Power Supply) board used in Picanol air‑jet and rapier looms to provide 3‑phase input with multiple regulated outputs (290 V, 26 V, 12 V, 5 V). Common failure modes for this class of power supplies include capacitor electrolyte leakage or dielectric breakdown, transformer winding insulation failure leading to shorted secondary windings, and overheating due to inadequate ventilation or dust accumulation. First‑check diagnostics should verify that the unit receives proper 3‑phase input voltage and phase balance, inspect all electrolytic capacitors for bulging or leakage, and test output rails with a multimeter while monitoring temperature rise under load.[oss-gpt-20b]