HESSER Repair Services India
HESSER is a German manufacturer renowned for high-speed circular knitting machines and textile processing equipment. Founded in 1920, HESSER has built a global reputation for innovation in knitting technology, with machines operating in mills across India, particularly in Tamil Nadu, Gujarat, and Maharashtra. HESSER equipment is engineered for precision, durability, and high production throughput in demanding textile manufacturing environments.
HESSER is a German manufacturer renowned for high-speed circular knitting machines and textile processing equipment. Founded in 1920, HESSER has built a global reputation for innovation in knitting technology, with machines operating in mills across India, particularly in Tamil Nadu, Gujarat, and Maharashtra. HESSER equipment is engineered for precision, durability, and high production throughput in demanding textile manufacturing environments.
Synchronics Electronics repairs the complete HESSER industrial electronics ecosystem — including stepper motor drivers, frequency converters, control boards, servo amplifiers, and PLC modules integral to modern HESSER knitting machinery. Our 180+ engineers have extensive hands-on experience troubleshooting HESSER-specific faults: needle jams, electromagnetic encoder failures, timing synchronisation issues, and drive communication breakdowns. Indian textile mills trust Synchronics because we deliver rapid turnaround repairs that minimise production downtime on high-value HESSER looms and circular knitting machines.
Expert HESSER textile machinery electronics repair across all Indian mill regions.
HESSER Product Lines We Repair
Our engineers are trained on the full HESSER product range. Below are the major product families we service.
HESSER Stepper Motor Drivers
Stepper drivers controlling needle positioning and fabric takedown in circular knitting. Common issues include phase loss, coil burnout, encoder signal dropout, and control voltage instability under 50°C+ mill conditions.
HESSER Frequency Converters
AC frequency converters regulating spindle speed, motor drive, and yarn tension in high-speed knitting machines. Typical faults: capacitor degradation, IGBT module failure, overload trips, and EMC filter damage from humid mill environments.
HESSER Control Boards (PCB Assemblies)
Microcontroller-based boards managing machine timing, yarn tension feedback, and safety interlocks. Repair challenges include corrosion from moisture and dust, solder joint fatigue, ROM/EPROM programming failure, and relay contact pitting.
HESSER Encoder and Sensor Interface Modules
Signal conditioning modules for electromagnetic encoders, tension transducers, and position sensors in knitting machines. Common failures: optical coupler burnout, input filter deterioration, and 4-20mA loop signal breakdown.
HESSER Servo Amplifiers
Precision servo drives for needle jab solenoids and tension control motors. Typical defects: gate driver IC failure, desaturation faults, hall sensor signal loss, and thermal shutdown triggered by inadequate cooling.
HESSER PLC and Motion Control Modules
Programmable logic controllers and motion coordinators synchronising machine cycles. Faults include program corruption, I/O card failure, communication protocol breakdown (Modbus/CANopen), and backup battery failure.
Why Choose Synchronics for HESSER 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 HESSER 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 HESSER Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in HESSER equipment arriving at our workshop.
- ✓HESSER stepper driver phase loss and coil burnout — Needle jam or mechanical obstruction causes motor stall; sustained current draw burns coil windings. Moisture ingress in mill environment corrodes phase connections, creating intermittent open circuits.
- ✓HESSER frequency converter IGBT module short circuit — Voltage spikes from loose cable shielding or nearby welding equipment cause gate oxide breakdown. Excessive ambient humidity in Indian mills degrades solder on power modules under thermal cycling.
- ✓HESSER control board relay contact pitting and welding — Arcing from inductive solenoid loads (needle drive solenoids) erodes relay contacts over 2-3 years. High humidity accelerates oxidation. Lack of protective diodes or snubber capacitors worsens arc damage.
- ✓HESSER encoder signal dropout and quadrature error — Electromagnetic interference from adjacent spindle drives corrupts encoder signal lines. Cable routing errors or loose connectors introduce noise. Optical couplers in signal interfaces degrade under continuous mill operation.
- ✓HESSER PLC program memory corruption and boot failure — Power supply brownouts during voltage spikes damage flash memory or battery-backed SRAM. Firmware updates interrupted by unexpected shutdowns corrupt program blocks. Physical damage from vibration loosens memory IC sockets.
- ✓HESSER servo amplifier desaturation fault and loss of solenoid drive — Gate driver IC failure or damaged MOSFET prevents full gate charge. Hall sensor disconnection removes closed-loop feedback. Thermal sensor calibration drift triggers false shutdown warning.
How We Repair Your HESSER 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 HESSER Equipment
We serve plant maintenance teams across all major industries where HESSER automation is deployed.
Frequently Asked Questions — HESSER Repairs
Do you repair HESSER equipment anywhere in India?+
Yes. Synchronics repairs the complete HESSER product range — stepper drivers, frequency converters, control boards, servo amplifiers, encoders, and PLC modules. We offer PAN-India door pickup from textile hubs: Tiruppur, Coimbatore, Erode (Tamil Nadu), Ahmedabad, Surat (Gujarat), Ludhiana (Punjab), and all major cities. All repairs completed at our flagship facility in Vadodara, Gujarat. Typical turnaround: 7-10 working days.
What is the most common HESSER machine fault in Indian mills?+
Stepper driver coil burnout from needle jams combined with humidity-induced relay pitting in control boards. Indian textile mills operate in high-moisture environments (wet processing, dyeing vats nearby), which accelerates corrosion and contact failure. Synchronics addresses both mechanical and electrical root causes: we replace failed coil packs, install conformal coating, and retrofit protective components to prevent recurrence. Our HESSER-experienced engineers understand mill-specific environmental stressors.
Can Synchronics repair HESSER frequency converters with burnt IGBT modules?+
Absolutely. HESSER frequency converter IGBT failures are a leading downtime cause in Indian mills, especially on high-speed machines running continuously. We stock OEM IGBT modules, perform full gate-driver and power-stage testing, install transient protection circuits, and conduct 2+ hours of load testing before return. We also audit your motor cabling and EMC environment to prevent future failures — critical in mills near welding shops or high-current machinery.
Do you have HESSER replacement parts and component stocks?+
Synchronics maintains strategic inventory of critical HESSER components: stepper motor coils, relay modules, IGBT power modules, optical couplers, capacitor banks, and memory ICs. For board-level repairs, we source OEM equivalents via our established vendor network. We can also retrofit components to modern, long-life alternatives (e.g., higher-temp electrolytic capacitors, improved optical couplers). This reduces your total cost of ownership and improves uptime on aging HESSER equipment.
How much does HESSER equipment repair cost at Synchronics?+
Repair cost depends on fault type and component damage scope. Diagnostic testing is free. Typical repairs range: stepper driver (Rs 8,000-18,000), frequency converter IGBT swap (Rs 12,000-22,000), control board relay/component replacement (Rs 5,000-15,000), encoder module repair (Rs 6,000-14,000). Emergency same-state repairs available at 30% surcharge. We provide detailed quotation after analysis; most customers find repair 40-50% cheaper than replacement. Synchronics also offers 2-year warranty on all repairs.
How do I send my HESSER 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 HESSER 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 HESSER 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 HESSER 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.
HESSER Repair Catalog
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Don't See Your HESSER Model Listed?
We repair the full range of HESSER 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
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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