The 0G1505A is a control‑board module used in Generac standby generators, handling start/stop sequencing, timer functions and status monitoring. Common failure points on this class of boards include burned or cracked ICs, damaged power‑rail traces, failed MOSFET drivers, and degraded capacitors that cause erratic timing or no-start conditions. First‑check diagnostics: verify the input voltage to the board (typically 12 V DC from the battery) and ensure proper ground continuity; inspect for visible burn marks, cracked solder joints or swollen electrolytics; and read any diagnostic LEDs or error codes via the generator’s status panel before proceeding with component replacement.[oss-gpt-20b]