Lincoln Electric SP-125 Board
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The Lincoln Electric SP‑125 board is a control module used in the SP‑125 Plus welding system, which supplies 115 V AC input and manages GMAW/MIG operations. Common failure modes reported for this legacy unit include power supply degradation (brown‑out of the main DC rail), burnt or failed MOSFETs on the output stage, and intermittent logic errors due to aging ICs; these often manifest as loss of welding capability or erratic arc control. Because the part is obsolete, spare components are scarce, so a repair shop should first verify the 115 V AC input, test the DC rail voltages with a multimeter, and inspect for visible burn marks or cracked PCB traces before attempting component replacement.[oss-gpt-20b] |
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We specialize in the repair and refurbishment of high-end industrial control electronics and power systems like this unit.
- ⚙️ Fast Diagnostics – Same-day evaluation available
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- ✅ 1-Year Warranty – Every repair fully guaranteed
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Other Repaired Units by Lincoln Electric
Lincoln Electric Vantage 300 Vantage 300 Circuit board & screenLincoln Electric G-1685-1 Circuit BoardLincoln Electric G-1687-1 Circuit BoardLincoln Electric 400 WelderLincoln Electric Lincoln Mig Welder SP125 Plus PC boardLincoln Electric SP-125 BoardContact Us
🚑Shop Location🛠️
Industrial Electronic Repair
145 Rockwell Place Ct
Tobaccoville, NC 27050
🚑 Rush repair shipments only — no walk-ins.
📞Phone
📦Mailing Address🚛
Industrial Electronic Repair
931-E S. Main St #204
Kernersville, NC 27284
📦 Mailing Address (for invoices or shipped repairs)
No walk-ins accepted.