Repair by equipment
Repair of Stepper Motor Drivers
Control converters for stepper motors.
Symptoms
What brings this equipment to the bench
If the machine's behaviour matches one of these, the diagnosis will sort it out. None of them requires the manufacturer to still support the line.
- Motor loses steps under load
- Driver heats up and trips
- No response to the pulse and direction signal
- Phase current out of regulation
Bench scope
What TECSI does on Stepper Motor Drivers
- Phase-by-phase testing of the power stage (MOSFET / H-bridge)
- Checking and adjustment of the phase current and of the chopper circuit
- Repair of the optocouplers on the pulse, direction and enable inputs
- Verification of the microstepping configuration and of the reference circuit
- Repair of the power supply and of the thermal protection circuits
- Recovery of heat dissipation: thermal paste, heatsink and mounting
- Test with a stepper motor on the bench and a pulse generator, checking torque, step loss and heating in steady state
Whatever cannot be recovered is stated in the report, before the quote.
12h quote24/7 emergencyFree loaner
Repair
How the equipment goes through the workshop
The same process applies to every brand and every piece of equipment. Nothing is carried out before the quote is approved.
- 01
Intake and identification
Entry record, photos of the condition on arrival and identification of manufacturer, model, serial number and firmware version.
- 02
Diagnosis and report
Bench analysis of the fault, testing the input, power, control and feedback stages. The report identifies the root cause, not just the burned component.
- 03
Quote
Customer approval before any intervention. An unrecoverable part or an economically unviable repair is reported as such.
- 04
Repair
Component replacement with new or approved equivalent parts, solder rework, technical cleaning and insulation restoration.
- 05
Functional test under load
The equipment is tested under real operating conditions, not merely powered up on the bench.
- 06
Burn-in and release
A continuous test period before return, accompanied by the technical report of the work performed.
- 07
Warranty
Warranty on the work performed, with technical support after the equipment is returned.
Commitments
Applies to every service
The commitments below do not depend on the equipment, the brand or the service hired.
12h
Quote in 12 hours
Diagnosis and commercial proposal delivered within 12 hours of receiving the equipment.
24/7
Emergency response
Team mobilized outside business hours, on weekends and holidays, for stopped lines.
Free
Loaner equipment
While we repair yours, we lend an equivalent unit so production does not stop. At no cost.
Free
Free assessment
Full technical evaluation of the equipment with no obligation to approve the repair.
Included
Free technical support
Post-repair follow-up and ongoing technical guidance at no additional charge.
Multi
Multi-brand parts
Spare parts stock: IGBTs, encoders and resolvers, including for discontinued lines.
Repair by equipment
Other equipment we repair
PLCs
Programmable logic controllers for industrial machines and processes.
Variable Frequency Drives
Speed control of electric motors in automation systems.
Servo Drives
Precision motion and positioning controllers for servomotors.
Servomotors
High-precision electronic motors for industrial automation.
HMIs
Human-machine interfaces for real-time machine monitoring.
Electronic Boards
Repair of printed circuit boards and electronic modules.
Robots and Robotic Devices
Programmable mechatronic equipment, robots and industrial arms.
Soft Starters
Soft start components for electric motors.
Spindle Motors
High-speed motors for machining and cutting.
Industrial PCs
Industrial computers, IPCs and shop-floor embedded systems.
Direct Drives
Direct drive systems without mechanical intermediaries.
AC and DC Power Supplies
Power supplies for alternating and direct current.
Frequently asked questions
Do you repair Stepper Motor Drivers of any brand?
Yes. Stepper Motor Drivers repair is multi-brand and covers discontinued lines, with a spare-parts stock of IGBTs, encoders, and resolvers, including for what is out of production.
How long until I get the quote?
Within 12 hours of receiving the equipment, with the diagnosis and commercial proposal detailed before any work begins.
Do I have to stop production during the repair?
Not necessarily. While we repair yours, we lend an equivalent unit so production keeps running, at no cost. There is emergency service outside business hours, on weekends and holidays, for a stopped line.
Are the assessment and the repair guaranteed?
The technical assessment is free with no obligation to proceed. Once repaired, the equipment comes back with a warranty and post-repair technical support.
Send us the equipment. We give production back.
Free assessment and a quote within 12 hours. If the line is down right now, talk straight to the technical team on WhatsApp.
You need it, we solve it.