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Stephen HarringtonSep 13, 2025
Why does my Lincoln Electric Welding System have maximum output but no control?
- MMichelle WolfeSep 13, 2025
If your Lincoln Electric Welding System has maximum output but no control, it could be due to a defective power SCR. Remove all gate leads G1, G2, and G3 at PC board connector J4. If the welder has any open circuit voltage, the power SCR is defective.