Variable Frequency Drive (VFD) Repair
Faulted or dead variable frequency drives — Allen-Bradley PowerFlex, ABB, Yaskawa, Danfoss, Mitsubishi, and more. Free evaluation, component-level power-stage repair, and load-verified testing appropriate to the drive class.
VFDs get a free bench evaluation and firm quote first. Drives under ~25 HP are our current sweet spot; larger drives are accepted case-by-case.
✓Fixed — or it's free
Unrepairable units are refunded; evaluations cost $0
✓24-month warranty
Every repair covered, parts and labor
✓3–5 business days bench time
Rush (1–2 day) and emergency service available
✓Program preserved
Your application and settings stay in the unit
VFDs / AC Drives repair services
Allen-Bradley
Free evaluationPowerFlex VFD Repair
PowerFlex drives up to 25 HP — free evaluation, typical repairs $350–$900 against four-figure replacements.
3–5 business days in lab · Free evaluation →
Multi-brand
Free evaluationVFD Repair (ABB, Yaskawa, Danfoss & More)
Most major-brand VFDs up to 25 HP — free evaluation, typical repairs $300–$900.
3–5 business days in lab · Free evaluation →
What this category covers
- ▸Allen-Bradley PowerFlex (525, 70, 700, 753, 755)
- ▸ABB ACS series
- ▸Yaskawa V1000 / A1000 and legacy
- ▸Danfoss VLT series
- ▸Mitsubishi FR series
- ▸Eaton, Fuji, Hitachi, Toshiba, Delta
Failures we see every week
- ▸Overcurrent / ground fault trips
- ▸Blown rectifier or IGBT power section
- ▸DC bus capacitor aging and failure
- ▸Precharge circuit failure
- ▸Dead display / control board failure
- ▸Cooling-fan failure and overtemperature trips
Part numbers in this category
Frequently asked questions
Why do you cap VFD repair at 25 HP?
Above ~25 HP, honestly validating a repair requires three-phase load-bank capacity. We publish the boundary instead of quietly under-testing big drives — the ceiling will move as the lab's test capacity grows.
Is a VFD repair reliable, or will it just fail again?
A proper repair replaces the actual wear items — IGBTs with new modules, the full DC bus capacitor bank, fans — not just the one part that died. That's why we can back repairs with a 24-month warranty.
Machine down? Let's get it back up.
Start a repair online in two minutes, or send us the part number for a free technician review.
The Fixed-or-Free Guarantee: if we can't repair it, you don't pay for the repair.
Call (817) 799-7332 · 📱 Text us a photo of your unit · Email repairs@controlboardlab.com