The Lincoln G4824‑3 is the main control PC board for Power MIG series welders, handling power sequencing, I/O logic, and communication with the motor drive. Common failure points on this board include burned or cracked voltage regulator capacitors, damaged MOSFETs in the power stage, and shorted or open traces around the microcontroller and servo driver ICs; these often manifest as no power to the welder, erratic weld currents, or error codes related to “control board” faults. First‑check diagnostics: verify that the 120 V/240 V input is present at the board’s power terminals, inspect for obvious burn marks or swollen components, and confirm all I/O connectors are seated and free of corrosion; then review the welder’s diagnostic LED or error log for specific fault codes pointing to the control board.[oss-gpt-20b]