The PowCon 130SE is a portable constant‑current DC inverter stick welder designed for 120 V operation with an internal SCR‑based power stage and a 7‑pin remote interface for foot‑pedal control. Common failure points on this model include degraded input power cords or plugs, worn contact pins in the remote connector, and aging SCRs that can burn out under high current loads; users often report the unit will power up but fail to provide output when the electrode leads are disconnected or the plug is missing. First‑check diagnostics: verify the 120 V supply voltage and continuity of the inlet plug, inspect the 7‑pin remote connector for corrosion or broken pins, and confirm that the internal SCRs and capacitors show no signs of overheating or leakage before proceeding to more detailed fault isolation.[oss-gpt-20b]