Repair tools
Inverter Welder Repair Tools
Simple WelderData check tools for organizing measurements before moving deeper into board-level repair pages.
Available tools
Lamp Limiter Short Diagnosis
Interpret bright, dim, dead or pulsing lamp-limiter behavior before full-power testing.
Open tool →IGBT Replacement Precheck
Build a checklist before installing replacement IGBTs, MOSFETs or H7B power devices.
Open tool →Auxiliary Power Rail Checker
Enter measured +25V, -25V, +15V, -15V and +5V rails and get likely next checks.
Open tool →Current Display vs Shunt Check
Compare a panel current display with real output current estimated from a 75mV shunt.
Open tool →How WelderData tools evolve
These tools use conservative diagnostic rules from WelderData repair records. As more board data, measured values and model-specific service cases are added, the checklists and result logic can be expanded without changing the public URL structure.