The SD16LP is a modular control board used in Arcom’s industrial drive and monitoring systems, typically interfacing with motor drives, PLCs, or SCADA networks. Common failure points for this class of boards include burnt capacitors on the power supply section, damaged I/O connectors, and overheating of the main voltage regulator due to inadequate ventilation or dust accumulation. Initial checks should verify that the board receives its rated input voltage (48 VDC/AC as specified), inspect all surface‑mount components for visible damage, and confirm that all digital I/O pins are correctly configured and not shorted; reviewing any stored error codes via the onboard diagnostic interface can also pinpoint a faulty module.[oss-gpt-20b]