Etasis EFRP‑462 is a 460 W N+1 mini redundant power supply designed for hot‑swap server and industrial control environments, accepting 100–240 VAC at 47–63 Hz and delivering dual 25/30 A outputs with load sharing. Common failure modes in this class include input transformer degradation, capacitor electrolyte leakage or failure, MOSFET gate driver burnout, and fan motor stall leading to overheating; redundant channels may also fail if the secondary unit is not properly synchronized. First‑check diagnostics: verify AC input voltage and current draw against spec, inspect for visible signs of component damage (burnt traces, bulging capacitors), test output rails with a calibrated multimeter while monitoring temperature rise, and review any diagnostic LEDs or error codes on the front panel.[oss-gpt-20b]