Barnstead CP53610 Welding System is a high‑power industrial welding controller that integrates a 208/240 VAC power supply, temperature monitoring via thermocouple input, and programmable control logic for arc parameters. Common failure modes in this class of units include tripped or blown fuses on the main power circuit, degraded thermocouple connections leading to inaccurate temperature readings, and failure of the internal microcontroller due to over‑voltage or thermal overload. Initial diagnostic steps: verify 208/240 VAC input voltage and continuity to the controller; inspect all fuse slots for blown fuses and replace as needed; check thermocouple wiring for corrosion or breakage and confirm correct terminal connections.[oss-gpt-20b]