FAAC 7PCB452/455 Gate Control Board is a low‑voltage (115 V or 230 V) control PCB used in single or dual leaf gate operators, providing motor drive, safety logic and programmable slow‑down functions. Common failure modes include burnt capacitors or electrolytic degradation on the power section, shorted I/O traces to the motor driver outputs, and loss of signal from the input relays due to corrosion or mechanical shock. First‑check diagnostics: verify mains voltage and filter capacitor integrity; inspect the board for visual signs of overheating or component damage; test input/output continuity with a multimeter and confirm that the motor drive signals are present when the gate is commanded to move.[oss-gpt-20b]