Welding Machine & Motor PCB Repair

Welding Machine & Motor PCB Repair

Welding machines, motor controllers, encoders and elevator boards live in tough environments — heat, vibration, dust and electromagnetic noise. We specialise in repairing the high-power switching electronics and control boards that drive them. From inverter welders to lift control PCBs, our engineers restore performance and safety to factory specification.

What We Repair

Welding Machines

  • ▶Inverter welding machines (MMA, ARC, MIG, TIG)
  • ▶Plasma cutters
  • ▶Spot welders and seam welders
  • ▶Wire feeder controllers

Motor & Encoder Electronics

  • ▶AC and DC motor controllers
  • ▶Servo motor encoders — incremental and absolute
  • ▶Resolver and tachogenerator electronics
  • ▶Soft starters and motor protection units

Elevator Electronics

  • ▶Lift main control PCBs
  • ▶Door operator boards
  • ▶Inverters and brake controllers
  • ▶Display and call panel boards

Common Symptoms

!Welder trips on power-up or under load
!No arc, weak arc, or arc instability
!IGBT explosion or burnt control board
!Motor controller not driving motor correctly
!Encoder feedback incorrect or missing
!Elevator stuck on fault code

Brands We Service

Welding — Lincoln, Miller, Esab, Fronius, WIM, CosmicMotors — Siemens, ABB, Crompton, Bharat BijleeEncoders — Heidenhain, Sick, HengstlerElevators — Kone, Otis, Schindler, Johnson, Mitsubishi

Our Repair Process

1

Safety-First Inspection

High-power machines are inspected with safety as priority — capacitors discharged, insulation tested.

2

Power Stage Diagnosis

IGBT modules, rectifiers, capacitors and transformers are tested individually.

3

Control Board Repair

Microcontrollers, gate drivers, current sensors and feedback circuits are traced and repaired.

4

Load Test

Welders tested on real arc loads, motor controllers tested on dynamometer benches.

5

Warranty Return

Up to 6 months warranty with written report.

Need Welding & Motor Repair?

Send photos and model number for a free quote within 24-48 hours.

Frequently Asked Questions

Do you offer on-site service for elevators?+

For nearby installations we can arrange on-site assessment. Most board-level repairs are done in our workshop.

Can you repair welders after capacitor explosion?+

Yes — but the extent of secondary damage determines feasibility. We assess and quote before any work.

What about encoder mechanical wear?+

Bearings and discs are replaced where serviceable; otherwise we recommend replacement units.