CONTREX Repair Services India
CONTREX is a Swiss specialist in advanced CNC control systems and machine tool automation, renowned for high-precision milling and turning centre controls. Their systems are embedded in thousands of machine tools across Indian automotive, aerospace, and precision engineering sectors. CONTREX controls deliver exceptional accuracy and reliability, making them the backbone of India's precision manufacturing ecosystem.
CONTREX is a Swiss specialist in advanced CNC control systems and machine tool automation, renowned for high-precision milling and turning centre controls. Their systems are embedded in thousands of machine tools across Indian automotive, aerospace, and precision engineering sectors. CONTREX controls deliver exceptional accuracy and reliability, making them the backbone of India's precision manufacturing ecosystem.
Synchronics Electronics has 180+ engineers with deep expertise repairing CONTREX CNC control systems, servo drives, spindle controllers, and axis modules. We service all CONTREX product generations — from legacy CONTREX-3 controls to modern touch-screen systems. Indian manufacturers trust Synchronics for rapid CONTREX repairs that minimise production downtime and restore precision performance.
Expert CONTREX CNC control repairs for Indian precision manufacturing and machine tool builders.
CONTREX Product Lines We Repair
Our engineers are trained on the full CONTREX product range. Below are the major product families we service.
CONTREX-3 Legacy Controls
Established CNC control architecture for older milling and turning centres. Repairs focus on degraded LCD displays, worn keyboard matrices, failed ROM modules, and servo loop instability. Common in pre-2000 machine tools across Indian job shops.
CONTREX CNC Touch Controls
Modern graphical interface CNC systems with industrial touchscreen and networked axis management. Typical faults include touchscreen calibration loss, Ethernet card failures, servo tuning drift, and spindle speed feedback sensor malfunction.
CONTREX Servo Drive Modules
Axis servo amplifiers and stepper drive modules used in CONTREX-controlled machines. Failures include capacitor dry-out, power transistor breakdown, encoder interface faults, and servo enable logic failure.
CONTREX Spindle Speed Control
Dedicated spindle drive modules managing tool rotation and constant surface speed (CSS) compensation. Common issues: PWM output oscillation, encoder signal dropout, DC bus voltage sag, and spindle bearing runout feedback errors.
CONTREX I/O Interface Boards
Discrete input-output, relay interface, and limit switch conditioning cards. Failures include reed relay corrosion, opto-coupler aging, AND/OR logic gate malfunction, and emergency stop circuit degradation.
CONTREX Memory and ROM Cartridges
Removable program storage and parameter backup modules for machine tool geometry and tool offset data. Repair scope: dead EEPROM chips, corroded cartridge connectors, lost program integrity, and firmware version conflicts.
Why Choose Synchronics for CONTREX Repairs?
PCB-Level Expertise
We repair down to the component level — not just swap boards. Our engineers identify root causes, replace failed IGBTs, capacitors, processors, and gate drivers on CONTREX equipment.
Fast Turnaround
Standard 7–10 working days. Express 3–5 days available for critical breakdowns. Emergency same-day/next-day service for unplanned downtime.
6-Month Warranty
Every repaired unit ships with a 6-month comprehensive warranty on parts and labour. Our repair success rate is over 94% across all brands.
All-India Service
Couriered repairs accepted from any city in India. Doorstep pickup available in Vadodara, Mumbai, Pune, Ahmedabad, Surat, Chennai, and more.
Common CONTREX Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in CONTREX equipment arriving at our workshop.
- ✓CONTREX touchscreen unresponsive or ghosting — Industrial dust ingress, humidity corrosion of touch matrix layers, and capacitive drift in aging glass panels are endemic to Indian climate conditions and high-temperature foundry/forge environments. CONTREX Touch controls use resistive film technology vulnerable to contamination.
- ✓CONTREX servo axis oscillates or loses position repeatability — Encoder cable shield degradation near motor vibration, stale tuning parameters after thermal cycling, or encoder read errors from CONTREX SDA servo amplifier. Typical in older Bharat Heavy Electricals and Precision Castings Ltd machines using CONTREX-3.
- ✓CONTREX spindle speed error or runaway RPM — Spindle encoder connector oxidation, feedback cable open circuit, or CONTREX SpindleMax PWM output stage failure delivering incorrect voltage to VFD. Common after monsoon storage in coastal India machine tool warehouses.
- ✓CONTREX CNC loses program or shows corrupted tool offset table — CONTREX ROM cartridge EEPROM bit rot, failed system battery backup cell, or loose cartridge contact after vibration and thermal cycling in machine enclosures. Data loss accelerates in Indian high-humidity climates.
- ✓CONTREX I/O module relays chatter or fail intermittently — Reed relay contact welding, coil winding insulation breakdown, or opto-coupler LED aging in CONTREX IOX-16/32 boards. Humidity and electrical noise from unshielded motor cables in Indian textile mills and automotive tier-2 shops causes premature failure.
- ✓CONTREX emergency stop circuit fails or times out incorrectly — E-stop button contact wetting, CONTREX safety logic module transistor leakage, or timing delay capacitor value drift. Non-compliance risk in Indian safety-audited sectors (auto OEMs, medical device manufacturing).
How We Repair Your CONTREX Unit
Receive & Log
Your unit is logged into our tracking system with a unique job number. You receive WhatsApp / email updates at every stage.
Fault Diagnosis
Board-level diagnosis using oscilloscopes, LCR meters, and thermal cameras. Root cause identified before any repair begins.
Component Repair
Faulty ICs, capacitors, MOSFETs, IGBTs, and gate drivers replaced with genuine or equivalent-spec components.
Full-Load Test
Unit tested under rated load with original or equivalent motor. All parameters verified. 6-month warranty issued.
Industries Using CONTREX Equipment
We serve plant maintenance teams across all major industries where CONTREX automation is deployed.
Frequently Asked Questions — CONTREX Repairs
Do you repair CONTREX equipment anywhere in India?+
Yes. Synchronics repairs the full CONTREX product range — CNC controls, servo drives, spindle controllers, I/O modules, and memory cartridges. We offer PAN India door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Bangalore, and all other industrial cities. Same-facility diagnosis and repair in Vadodara, Gujarat. Turnaround time typically 3-5 working days.
Can you repair my old CONTREX-3 control or only modern Touch controls?+
We repair both legacy CONTREX-3 and modern CONTREX Touch controls with equal expertise. Our 180+ engineers include specialists in vintage CNC electronics, discrete logic repair, and ROM cartridge recovery. Many Indian machine shops rely on CONTREX-3 equipment for niche work — we keep them running with component-level repair and board refurbishment.
What if my CONTREX machine displays a servo error code or position alarm?+
Synchronics uses genuine CONTREX diagnostics firmware and test harnesses to decode servo faults and axis errors. We bench-test your CONTREX SDA servo module in isolation, validate encoder signal path integrity, and perform thermal stress testing before return. Most servo errors are repaired within 2 working days. We provide a detailed fault report with your machine.
Do you offer calibration and commissioning after CONTREX repair?+
Yes. After component repair or board rebuild, we validate all CONTREX systems at our facility using certified test loads and precision measurement tools. For customers in Vadodara, Ahmedabad, and Mumbai, we offer on-site machine re-commissioning — servo tuning, spindle runout check, and tool offset verification — at an additional fee.
How long do CONTREX repairs typically take and what is your warranty?+
Standard CONTREX repair turnaround is 3-5 working days. We offer a 12-month parts warranty on repaired boards and modules. For critical machines, express repair service (24-48 hours) is available at premium pricing. We guarantee CONTREX systems leave our facility tested and ready for production use.
How do I send my CONTREX unit for repair?+
Pack the unit securely and courier it to our Vadodara workshop. Include a note with the fault description and your contact details. We will log it into our system and WhatsApp you a job number within 24 hours of receipt. Doorstep pickup is available in Vadodara, Ahmedabad, Surat, Mumbai, and Pune.
What is the cost of repairing a CONTREX drive or PLC?+
Repair cost depends on the model and the fault. We offer a free diagnosis — once we identify the fault, we provide a fixed quotation before proceeding. Typical repairs cost 20–40% of the new unit price. We will never repair without your approval.
What warranty do you provide on CONTREX repairs?+
All repaired units carry a 6-month comprehensive warranty covering the same fault and related issues. If the fault recurs within the warranty period, we repair it free of cost.
Do you provide a no-fix, no-fee guarantee?+
Yes. If we cannot repair your CONTREX unit after diagnosis, you pay only the diagnosis fee (₹500–₹1,500 depending on the product). The unit is returned to you at no additional charge.
CONTREX Repair Catalog
No products found for CONTREX
Don't See Your CONTREX Model Listed?
We repair the full range of CONTREX industrial electronics — even if the specific model is not yet in our catalog. Send us the unit details and we'll confirm repairability within 24 hours.
Free evaluation • 6-month warranty • PAN India pickup
Get Your Equipment
Back in Action — Fast
Send us your faulty industrial electronics. Our engineers will diagnose it and provide a detailed quote within 24 hours — with no obligation to proceed.
Free Evaluation
No obligation
48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service