Larko Electronics 24‑02 Circuit Board is a compact logic module used in industrial gate operators and power distribution units, typically handling signal processing and control functions. Common failure points for this board include burnt or cracked surface‑mount components around the microcontroller, damaged capacitors on the power supply section, and broken traces from dip‑switch connections that affect timer/ERD settings. First‑check diagnostics: verify input voltage and regulator output with a multimeter; inspect the board visually for burn marks, corrosion, or loose solder joints; confirm dip‑switch positions and test I/O lines against expected logic levels before proceeding to component replacement.[oss-gpt-20b]