Weldlogic PA-10-100-STD Micro Arc

The Weldlogic PA‑10/100‑STD Micro Arc is a low‑current, closed‑loop servo‑controlled TIG welder designed for precision micro‑welding with millisecond square‑wave pulse control to minimize tungsten wear and heat input. Common failure points in this class of equipment include power supply instability (DC bus voltage sag), servo drive drift or loss of feedback from the current sensor, and degradation of the internal MOSFET gate drivers due to overheat or aging. Initial troubleshooting should verify that the 120/240 V AC input is clean and within spec, confirm the DC bus voltage matches the manufacturer’s rated output (≈100 V), inspect the current sense resistor and its wiring for corrosion or loose connections, and review any error codes displayed on the control panel for indications of sensor or drive faults.[oss-gpt-20b]

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