SMAC LAL20‑010‑55M is a 24 VDC linear actuator power module used in short‑stroke (10 mm) SMAC actuators; it supplies the drive current to the actuator’s brushless motor and hosts a small controller board. Known failure modes for this unit include burned or tripped MOSFETs on the output stage, melted capacitors due to over‑temperature, and control‑board firmware corruption that causes loss of motion or erratic force output. First‑check diagnostics: verify 24 V input voltage with a multimeter, measure continuity across the motor terminals and inspect the PCB for burnt components or cracked solder joints, then review any error codes displayed on the actuator’s indicator LEDs or host controller.[oss-gpt-20b]