Soft Starter Breakdown Repairs & Electrical Fault Finding
Bypassed contactor welding, thyristor (SCR) short circuits, and phase-imbalance startup trips prevent heavy motors from ramping smoothly. Lectro Power Systems delivers specialised soft starter diagnostics, thyristor testing, and motor starting curve tuning across Western Australia.
Symptoms We Resolve
Common Soft Starter Faults We Diagnose & Fix
SCR Thyristor Short Circuits
Testing silicon-controlled rectifiers for open-circuit or shorted junctions using specialised digital meters.Internal/External Bypass Contactor Welding
Replacing pitted bypass contactors that fail to open or close during starting ramp handovers.Phase Loss & Supply Voltage Imbalances
Diagnosing upstream utility supply issues, dropped phases, and incoming line fuse failures.Motor Starting Current Overload Trips
Adjusting initial torque limits, current limit curves, and acceleration ramp times on heavy loads.Control Board Trigger Signal Failures
Troubleshooting gate trigger circuits, electronic thermistor inputs, and 24VDC start/stop control loops.Thermal Overheating & Fan Failures
Servicing internal enclosure cooling fans, cleaning heatsink fins, and replacing failed thermal sensors.
The Lectro Advantage
Why Choose Lectro for Soft Starter Repairs
SCR thyristor health checks
Rapid on-site testing of semiconductor switches to identify whether an internal component or the entire starter needs replacement.Bypass contactor synchronisation
Ensuring seamless transition from soft-start ramping to line-voltage running without contact arcing.In-line current limit optimisation
Customising initial torque and acceleration curves to match heavy-inertia fans, pumps, and crushers.
FAQs