Servo Drive & Motor Repair Services
Expert servo drive and servo amplifier repair. Restore precision motion control to your CNC machines, robotics, and automation systems.
Get a Free QuotePrecision Servo Drive Repair
Servo drives are the heartbeat of precision motion control. When they fail, your CNC machines, robots, and automated equipment come to a halt. Flexa Systems provides expert servo drive repair services with fast turnaround and comprehensive testing. Our technicians specialize in diagnosing complex servo issues and restoring drives to factory specifications.
Precision Testing
Every servo drive is tested under load conditions to ensure accurate speed, torque, and position control.
Motor Matching
We can tune and configure servo parameters to match your specific motor and application requirements.
Performance Upgrade
Upgrade aging components to improve reliability and extend the service life of your servo drives.
Servo Drive Brands We Repair
Types of Servo Drives We Repair
AC Servo Drives
Complete AC servo amplifier repairs including power stage, control board, and encoder feedback circuits. We handle single and multi-axis configurations.
DC Servo Drives
Legacy DC servo drive repairs with SCR/thyristor replacement, armature control repairs, and field control circuit troubleshooting.
Spindle Drives
CNC spindle drive repairs for machining centers and lathes. High-power inverter repairs and spindle orientation fixes.
Robot Servo Amps
Industrial robot servo amplifier repairs for all major robot brands. Multi-axis servo pack repairs and calibration.
Common Servo Drive Problems We Fix
Our Servo Repair Process
From evaluation to testing — how we get your servo back online
Initial Diagnosis
Fault code analysis and visual inspection to identify failure modes.
Component Testing
Power stage, control circuits, and feedback systems are thoroughly tested.
Precision Repair
Failed components replaced with quality parts matched to specifications.
Load Testing
Full-power testing with motor load ensures proper operation.
Industries We Serve
CNC Machining
Robotics
Packaging
Printing
Automotive
Aerospace
Food & Beverage
Pharmaceutical
Common Servo Drive Failure Modes We Repair
Servo drives fail for predictable reasons. Our diagnostic process — used on thousands of servo systems — identifies root causes rather than just replacing boards, ensuring your repaired drive performs reliably for years.
Power Stage IGBT Failure
High current demand and thermal cycling degrade IGBT modules. Symptoms: overcurrent fault, drive won’t enable, output phase loss. Full power stack rebuild and dynamic testing performed.
Encoder Feedback Errors
Encoder cable damage, contamination, or encoder IC failure generates position errors and E-stop faults. We repair encoder interfaces and test commutation accuracy.
Bus Capacitor Aging
DC bus capacitors age and fail, causing undervoltage faults and regenerative braking failures. All capacitors replaced and bus voltage stability verified under load.
Resolver & Hall Effect Issues
Resolver or Hall effect sensor failures cause motor commutation errors, runaway, or loss of position. We repair resolver interfaces and test position feedback accuracy.
Firmware & Parameter Corruption
Power surges and battery failure corrupt servo parameters and firmware. We restore firmware, recover parameters, and verify all axis tuning data.
Regenerative Brake Resistor Faults
Failing brake resistors cause overvoltage faults during deceleration. We test and replace dynamic brake components and verify safe deceleration performance.
Servo System Applications We Support
Servo drives control precision motion in the most demanding applications. A failed servo means stopped production — whether that’s a CNC machining center, a robotic welding cell, or a packaging line.
CNC Machining Centers
Spindle drives, axis drives, and rotary table servo systems. We repair Fanuc, Siemens, Mitsubishi, and Yaskawa servo systems for all major CNC platforms.
Industrial Robotics
ABB, Fanuc, KUKA, and Yaskawa robot servo drives. Axis servo repair with full encoder and resolver testing.
Packaging & Converting
High-speed multi-axis servo systems for label applicators, form-fill-seal, and slitter/rewinder machines.
Injection Molding
Servo-driven clamping, injection, and ejection axes. We repair Parker, Bosch, and specialized injection molding servo systems.
Semiconductor & Electronics
Cleanroom-compatible servo repair for wafer handling, PCB assembly, and inspection equipment.
Metal Forming & Stamping
High-force servo press drives and torque-controlled servo systems for metal forming applications.
Servo Motor Repair & Testing
A failed servo drive often masks an underlying motor problem — and vice versa. Flexa Systems performs complete servo system testing: drive bench test with a matched motor, back-EMF measurement, insulation resistance testing, and encoder accuracy verification. We repair servo motors including winding rewinding, bearing replacement, encoder replacement, and shaft seal replacement.
Every servo drive tested under dynamic load conditions
Position accuracy tested to ±1 encoder count
Back-EMF, insulation, and phase balance verified
Complete drive and motor repair covered
Get a free servo drive evaluation — call (254) 254-0005 or submit your unit details online.
Get Your Servo Drive Repaired
Minimize downtime with our fast, reliable servo drive repair services. Free evaluation on all units. Need a replacement? Browse servo drives and parts.