The Deutronic DBL430‑14/115 is an automotive power processor that conditions lead‑acid and lithium‑ion batteries in 12 V vehicle systems using a microcontroller‑based power management board. Common failure points for this class of units include burnt or swollen electrolytic capacitors on the input stage, damaged MOSFETs or IGBT drivers due to over‑current events, and degradation of the internal temperature sensor or voltage reference leading to erratic control loops. Initial checks should verify that the 12 V supply is within spec (±5 % tolerance), inspect the board for visual signs of component damage or overheating, and read any stored diagnostic codes via the serial/USB interface if available.[oss-gpt-20b]