Model hub
LGK100L Plasma Cutter Repair Hub
A model-level repair hub for LGK100L plasma cutters, connecting power-stage faults, control-board evidence and component-level diagnostics.
Quick Answer
This model hub connects the LGK100L plasma-cutter fault pages into one repair path: input response, display, protection, no output, breaker trip, filter fuse, IGBT failure and weak current.
- Start with the visible symptom before choosing a board or component page.
- Use connector evidence such as X13 DC5V, X7 rail groups and X14 Hall-sensor evidence to avoid blind board replacement.
- High-energy symptoms such as breaker trip or burned IGBT should be handled before control-board diagnosis.
LGK100L fault routes
Choose the page that matches the first visible fault.
Power-on no responseInput power and power-switch route.Fan runs but display offX13 DC5V and display-head split.Power-on protection lightTemperature relay, rail and Hall-feedback route.No outputControl, Hall feedback, diode, capacitor and IGBT split.Power-on breaker tripRectifier bridge, capacitors, IGBT and driver evidence.Burns IGBTRoot-cause route before installing another IGBT.Burns filter-board fuseX3/X5 branch isolation route.Weak cutting currentOutput cable, potentiometer, Hall sensor and shunt evidence.
LGK100L board and component references
Open these after the symptom route points to a board or component layer.
LGK100L symptom-to-layer summary
| Symptom | First layer | Next page |
|---|---|---|
| No response | Input cord / power switch | Power-on no response |
| Fan runs, display off | X13 DC5V / display head | Fan runs but display off |
| Protection light | Temperature relay / rails / Hall feedback | Power-on protection light |
| No output | Control rails / potentiometer / Hall / output stage | No output |
| Breaker trip | Rectifier bridge / capacitors / IGBT | Power-on breaker trip |
| Burns IGBT | Driver / detection / capacitors / inverter board | Burns IGBT |