Servo Drive & Servo Amplifier Repair
Alarm-faulted, dead, or tripping servo drives and amplifiers — FANUC, Mitsubishi, Yaskawa, Allen-Bradley Kinetix, Siemens, Indramat. Free bench evaluation, firm quote before any work, component-level repair with new power stages where needed.
Servo drives get a free bench evaluation first — you approve a firm quote before any repair work begins.
✓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
Servo Drives repair services
FANUC
Free evaluationFANUC Servo Amplifier Repair
Alarm 8, 12, or a dead amp on a FANUC machine? Free bench evaluation, firm quote before any work — most repairs land between $650 and $1,500.
3–5 business days in lab · Free evaluation →
FANUC
Free evaluationFANUC Spindle Amplifier Repair
Spindle alarms stop the whole machine. Free evaluation and a firm quote — typical spindle amplifier repairs run $750–$1,800.
3–5 business days in lab · Free evaluation →
FANUC
Free evaluationFANUC Power Supply (PSM) Repair
When the PSM faults, every axis stops. Free evaluation; typical repairs $500–$1,200.
3–5 business days in lab · Free evaluation →
Mitsubishi Electric
Free evaluationMitsubishi Servo Amplifier Repair
MR-J2S amps run half the CNC world and fail the same way — a blown IPM. Free evaluation; typical repairs $450–$950.
3–5 business days in lab · Free evaluation →
Yaskawa
Free evaluationYaskawa Servo Repair
Sigma-series servopacks from legacy SGD to Sigma-5 — free evaluation, typical repairs $400–$900.
3–5 business days in lab · Free evaluation →
Allen-Bradley
Free evaluationAllen-Bradley Servo Drive Repair
Ultra 3000 and Ultra-series drives repaired with free evaluation — typical $500–$1,100. Kinetix accepted for honest evaluation.
3–5 business days in lab · Free evaluation →
Indramat / Bosch Rexroth
Free evaluationIndramat / Rexroth Drive Repair
Indramat drives outlived their OEM support decades ago. Free evaluation, typical repairs $600–$1,200.
3–5 business days in lab · Free evaluation →
Siemens
Free evaluationSIMODRIVE 611 Repair
SIMODRIVE 611 axis modules and control cards repaired — free evaluation, typical $500–$1,400. Large infeed modules honestly declined.
3–5 business days in lab · Free evaluation →
What this category covers
- ▸FANUC servo amplifiers (A06B series, alpha & beta)
- ▸Mitsubishi MR-J2S / MR-J3 / MR-J4
- ▸Yaskawa Sigma series (SGD, SGDH, SGDM, SGDV)
- ▸Allen-Bradley Kinetix & Ultra
- ▸Siemens SIMODRIVE & SINAMICS modules
- ▸Indramat / Bosch Rexroth drives
Failures we see every week
- ▸Overcurrent / IPM alarm faults
- ▸Blown IGBT or intelligent power module
- ▸DC bus / capacitor failure
- ▸Dead control power (switching supply failure)
- ▸Encoder feedback errors
- ▸Gate-driver failure after motor short
- ▸Cooling-fan failure and thermal trips
Part numbers in this category
Frequently asked questions
How do I know the amplifier failed and not the motor?
Send the alarm code with your unit. Many alarm numbers distinguish amplifier faults from feedback/motor faults, and our bench evaluation tests the amplifier independently — if your amp is healthy, you pay nothing and you've ruled out the expensive box.
Why free evaluation instead of a flat price on drives?
Drive damage varies enormously — a clean IPM swap and a board cooked end-to-end are different repairs. The honest model is a free bench evaluation and a firm quote you approve before any work. The typical ranges we publish come from real market data.
Do repaired drives need reprogramming?
Rarely. Servo parameters typically live in the CNC or in protected drive memory that repairs don't touch. Where a platform has exceptions (like Indramat firmware modules), we handle the module correctly and note anything your integrator should verify.
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