The Bycan Corporation 24‑11L Battery Charger Division unit is a high‑current industrial charger designed to deliver regulated DC output (typically 12–48 V) for large battery banks in field service equipment. Common fault patterns include failure of the main power MOSFET or IGBT array, degradation of the internal rectifier bridge, and overheating of the heat sink due to inadequate ventilation; these often manifest as a sudden drop in output voltage or an over‑temperature alarm. For this class of chargers, also watch for capacitor leakage on the input filter bank and insulation breakdown between high‑voltage tracks. First‑check diagnostics: verify the 115/230 VAC supply with a multimeter, inspect the rectifier bridge and MOSFETs for visible damage or burn marks, and confirm that the output voltage matches the specified setpoint while monitoring junction temperatures with an IR thermometer.[oss-gpt-20b]