IGBT Module Repair & Replacement
IGBT modules are the power switching heart of VFDs, servo drives, inverters, UPS systems, and welding machines. When an IGBT fails — often explosively — it can take out gate drivers, snubber networks, and DC bus capacitors along with it. We test, diagnose, and replace IGBT modules with genuine or high-quality equivalent parts, and repair all the secondary damage that typically accompanies an IGBT failure.
What We Repair
IGBT Modules
- ▶Single IGBT modules (half-bridge, full-bridge)
- ▶6-in-1 and 7-in-1 power modules (PIM)
- ▶IPM (Intelligent Power Modules) with built-in drivers
- ▶IGBT brick modules for high-power applications
- ▶SiC and hybrid IGBT modules
Associated Repairs
- ▶Gate driver boards and opto-coupler replacement
- ▶DC bus capacitor bank replacement
- ▶Snubber circuit repair
- ▶Current sensor (Hall effect) replacement
- ▶Thermal paste and heatsink maintenance
Equipment Types
- ▶Variable frequency drives (VFDs)
- ▶Servo drives and spindle drives
- ▶Industrial UPS and inverters
- ▶Welding machines (inverter type)
- ▶Induction heating systems
Common Symptoms
Brands We Service
Our Repair Process
Module Testing
Each IGBT is tested with a dedicated module tester — checking gate threshold, collector-emitter saturation, and insulation resistance.
Secondary Damage Assessment
Gate drivers, snubbers, DC bus caps, and current sensors are inspected — IGBT failure rarely occurs in isolation.
Module Replacement
Failed IGBT replaced with genuine or equivalent rated module. Thermal compound and mounting torque applied to specification.
Gate Driver Verification
Driver waveforms verified — dead-time, rise-time, and gate voltage levels must be correct to prevent re-failure.
Full-Load Test
Repaired unit run under load for extended period to verify thermal and electrical performance.
Need IGBT Repair?
Send photos and model number for a free quote within 24-48 hours.
Frequently Asked Questions
Why do IGBTs fail?+
Common causes include overcurrent, overvoltage spikes, overheating (failed fan/thermal compound), gate driver failure, and age-related degradation of the module.
Can you use equivalent IGBT modules instead of original?+
Yes — many IGBT modules have direct cross-references from other manufacturers with identical ratings. We always match voltage, current, and package specifications.
How quickly can you source IGBT modules?+
Common modules (Infineon, Fuji, Mitsubishi) are usually available within 2–5 days. Rare or discontinued modules may take longer.