Repair
inverters industrial
Siemens SINAMICS · ABB ACS · Danfoss VLT · SEW Movidrive · Lenze · Yaskawa · Mitsubishi FR
Comprehensive service of inverters and frequency drives — replacement of IGBT, electrolytic and film capacitors, service of control cards, parameterization and load tests. No-obligation quote, 12-month warranty.
Diagnostics included in repair
Priority quote
12-month warranty
Courier pickup from all of Europe
Parameterization after repair
What do we repair in an inverter?
IGBT and power modules
Replacement of damaged IGBT transistors, rectifier diodes and gate modules. We use original or equivalent best-quality components.
capacitors DC-link
Replacement of electrolytic capacitors in the DC bus section. Preventive replacement of film and electrolytic capacitors on cards.
cards control
Repair of CPU and inverter regulator cards. Service of power supply circuits, A/D converters, PROFIBUS/Modbus/CANopen communication ports.
Rectifier section and power supply
Repair of controlled rectifier, diode bridge, thyristors and DC-link pre-charge circuits. Service of internal inverter SMPS.
Cooling and fans
Replacement of cooling fans (service and preventive). Check of thermostats, cleaning of heatsinks. Regular maintenance to prevent overheating.
Parameterization and commissioning
Parameter backup before repair (.par/.bak file). After repair, full parameterization on a load test bench. Returned with a test results sheet.
Why EFIXLAB?
Inverter service for all brands in one place
- All brands and powers — Siemens SINAMICS G/S, ABB ACS, Danfoss VLT, SEW Movidrive/Movitrac, Lenze, Yaskawa, Mitsubishi FR, Parker, Emerson. No declared maximum power limit.
- Parameter backup — backup before repair and restoration after. Format .par/.bak/PC or manufacturer protocol.
- Load testing — inverter verified on a test motor before return.
- Preventive capacitor replacement — if capacitors exceed 8–10 years, we offer preventive replacement during repair, before failure occurs.
- Priority for stopped production — we respond first to urgent requests.
- 12-month warranty — on all work performed without any reservations.
How does repair work for inverters?
Request
online or by phone
Shipping
by courier
Kopia par.
+ diagnostics
Quote
no obligation
Repair
& load test
Return
with warranty
Report fault inverters — no-obligation quote
Provide the inverter brand, model and power rating plus fault description. Our drive specialist will get back to you with a diagnosis and quote.
Dziękujemy! We have received your request — our drive specialist will contact you shortly.Frequently asked questions
We repair Siemens SINAMICS (G120/G150/S120), ABB ACS (310/550/850/880), Danfoss VLT, SEW Movidrive/Movitrac, Lenze 8200/8400, Yaskawa A1000/V1000, Mitsubishi FR-A700/800, Parker, Emerson CT, Vacon and others.
Yes — we perform a parameterization backup before repair (if technically possible). We use manufacturer software or interchangeable parameter cards (Siemens MMC, ABB FlashDrop). After repair the parameters are restored.
Yes — we repair inverters up to several hundred kW. For large inverters, on-site mobile service is possible or the device can be shipped palletized.
It depends on the extent of the damage. Repairing IGBT or capacitors usually costs 20–40% of a new device price and is cost-effective. In the case of a completely burnt control card, we advise honestly and say directly when repair makes no economic sense.
Inverter Repair — All Manufacturers and Power Ranges
Variable frequency drives (inverters) are among the most common industrial electronic devices, controlling motor speed and torque in applications from simple HVAC fans to complex multi-axis machine tools. Major manufacturers include Siemens, ABB, Danfoss, SEW-Eurodrive, Schneider Electric, Lenze, and many others. Despite advances in reliability, inverters remain susceptible to failure from mains quality issues, overloading, environmental contamination, and simple component aging over their 10–20 year expected service lives.
The most frequent inverter failures involve the power stage — IGBT or MOSFET module degradation from thermal cycling, gate driver circuit failures, and DC bus electrolytic capacitor aging that causes undervoltage trips or ripple current issues. Input rectifier diodes fail from mains transients, braking chopper circuits burn out from regenerative energy, and cooling fans wear out causing thermal shutdowns. On the control side, power supply section failures, processor board faults, and communication module problems can also disable drives.
At EFIXLAB, we repair inverters from all major manufacturers across the full power range — from 0.37 kW single-phase drives to 500+ kW high-power units. Our repair process includes power stage testing with calibrated loads, DC bus capacitor ESR measurement, gate driver signal verification, control board diagnostics, and comprehensive functional testing. We stock common IGBT modules, electrolytic capacitors, gate driver ICs, and cooling fans for rapid turnaround.
Inverter repair typically saves 40–70% compared to new drive purchase, with the savings increasing for higher power ratings where new drives can cost thousands of euros. For discontinued drive models, repair is often the only practical option that avoids costly retrofitting and reprogramming. All inverter repairs at EFIXLAB include load testing at rated current and carry our standard 12-month warranty on parts and workmanship.