Lincoln Electric Lincoln Mig Welder SP125 Plus PC board
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The Lincoln SP‑125 Plus is a semi‑automatic constant‑voltage DC arc welder that uses a solid‑state power source and a wire feeder controlled by an internal PC board (9SG series). Common failure points for this model include burnt or tripped MOSFETs on the control board, degraded input capacitors, and faulty voltage regulator ICs that cause erratic weld current or shutdowns. First‑check diagnostics: verify 120 V AC supply to the transformer, inspect the PC board for burn marks or swollen electrolytics, and confirm the output voltage from the rectifier stays within spec; then review any error codes displayed on the welder’s panel.[oss-gpt-20b] |
Need your Lincoln Electric repaired or tested?
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
- 🔁 Reliable Turnaround – Most jobs ship within 5–10 business days
- 🧰 Expert Technicians – Decades of board-level experience
- ✅ 1-Year Warranty – Every repair fully guaranteed
📞 Call Now: 1 (336) 969-0110
Free Estimates • Industrial-grade testing • Nationwide Service
⚡ Call to Purchase AI Services — help us build the next Grace Blackwell GX10 node.
Industrial AI Hardware Recovery — Free Diagnostic • Pay Return Shipping Only
[oss-gpt-20b]We reclaim and repair GPUs and industrial AI hardware (cards, PSUs, fan modules, VRM boards). Free estimate — you only pay return shipping if you decline.
- 🔧 Board-level diagnostics (shorts, VRM, memory, fan, thermals)
- 🧪 Burn-in + benchmarks (hash/matrix, memtest, stability)
- ♻️ Option: donate failed cards for parts → we refurb + resell
- ✅ 1-Year warranty on completed repairs
Free Estimates • Industrial-grade testing • 1-Year Warranty • Nationwide Service
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.