Model reference
WIG160 AC/DC Inverter TIG Welder Reference
A WelderData reference for compact MOSFET AC/DC inverter TIG welders, focused on routing faults between inverter power stage, AC/DC selection, HF start, gas timing and protection rails.
Database summary
WIG160-style AC/DC inverter TIG welders use a compact inverter power stage and additional AC/DC output-control logic. They can show mixed faults: DC stick or DC TIG may work while AC TIG fails, or HF and gas may work while the AC output does not switch correctly.
WelderData treats this platform as a compact inverter TIG family rather than a generic TIG symptom page. The repair path begins with safe power checks, auxiliary rails, HF/gas evidence and then mode-specific output response.
Mode-based diagnosis
| Observed behavior | Likely route | Do not confuse with |
|---|---|---|
| Stick output works but TIG does not | Torch/HF/gas/TIG enable path | Main inverter short failure |
| DC TIG works but AC TIG fails | AC/DC switching or polarity-control path | Gas or HF-only fault |
| HF spark exists but arc does not stabilize | Arc transfer, output enable or feedback path | HF transformer only |
| Machine shuts down under AC load | Protection, feedback or output switching stress | Panel display fault only |