EPCOS Repair Services India
EPCOS, now part of TDK Corporation, is a world-renowned manufacturer of passive electronic components including capacitors, inductors, filters, and thermal management solutions. Headquartered in Munich, Germany, EPCOS has been a trusted supplier to industrial automation, power electronics, and telecommunications sectors globally. In India, EPCOS components are embedded in countless industrial control systems, power supplies, and conditioning units across manufacturing plants, refineries, and data centres.
EPCOS, now part of TDK Corporation, is a world-renowned manufacturer of passive electronic components including capacitors, inductors, filters, and thermal management solutions. Headquartered in Munich, Germany, EPCOS has been a trusted supplier to industrial automation, power electronics, and telecommunications sectors globally. In India, EPCOS components are embedded in countless industrial control systems, power supplies, and conditioning units across manufacturing plants, refineries, and data centres.
Synchronics Electronics specializes in diagnosing and repairing failed EPCOS capacitor modules, power factor correction banks, film capacitors, ceramic capacitors, and EMI/RFI filter assemblies used in industrial drives, PLCs, and power distribution systems. With 30+ years of experience, our engineers understand EPCOS component behaviour under thermal stress, voltage spikes, and humidity-related degradation common in Indian climates. We source authentic EPCOS spares and rebuild complete power conditioning systems to restore equipment reliability.
Expert diagnosis and repair of EPCOS capacitor banks, filters, and power conditioning modules across Indian industrial sectors.
EPCOS Product Lines We Repair
Our engineers are trained on the full EPCOS product range. Below are the major product families we service.
MKP Power Film Capacitors
Polypropylene film capacitors used in power factor correction, motor drives, and industrial power supplies. Common failures include dielectric breakdown, internal short circuits, and case rupture due to voltage transients or thermal cycling in high-ambient temperature environments.
ECHU Aluminium Electrolytic Capacitors
High-frequency, low-ESR electrolytic capacitors for PLC power supplies, servo drive rectification, and industrial UPS systems. Failure modes include capacitor drying, valve opening, and loss of capacitance in humid or thermally stressed conditions common in Indian plants.
B3292 Power Factor Correction Modules
Pre-assembled PFC banks integrating EPCOS capacitors, reactors, and control electronics for three-phase industrial systems. Typical repairs involve capacitor replacement, inductor winding shorts, and thyristor/contactor failures.
EMI/RFI Suppression Filters
LC filter modules and feedthrough capacitors for motor drives, VFDs, and servo amplifiers to reduce electromagnetic interference. Faults include internal shorted turns, capacitor rupture, and ferrite core fractures.
Ceramic Disc and Multilayer Ceramic Capacitors
High-frequency, temperature-stable ceramic capacitors used in logic circuits, sensor interfaces, and control modules. Common failures include capacitor cracking, delamination, and solder joint fractures under thermal cycling.
B32310/B32311 Metallized Polyester Film Capacitors
General-purpose film capacitors used in timing circuits, resonance networks, and industrial signal conditioning. Degradation occurs due to humidity ingress, partial discharge at high voltages, and thermal stress in enclosed panel environments.
Why Choose Synchronics for EPCOS 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 EPCOS 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 EPCOS Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in EPCOS equipment arriving at our workshop.
- ✓Capacitor dielectric breakdown and short circuit — EPCOS film and electrolytic capacitors fail when exposed to sustained overvoltage (grid spikes, switching transients), high dV/dt stress from fast-switching IGBTs in VFDs, or thermal runaway in sealed enclosures without adequate ventilation common in Indian summer conditions.
- ✓Power Factor Correction bank capacitor rupture — EPCOS PFC bank capacitors rupture when harmonic distortion (THD > 8%) from non-linear loads (VFDs, welders, rectifiers) causes excessive internal heating. Repeated thermal cycling and humidity in monsoon-prone Indian factories accelerate degradation.
- ✓Loss of capacitance and increased ESR in electrolytic modules — EPCOS electrolytic capacitors (ECHU series) dry out when exposed to sustained elevated temperature (> 65C in non-air-conditioned panel environments). Electrolyte evaporation through the vent valve reduces capacitance and increases equivalent series resistance, degrading PLC power supply stability.
- ✓EMI filter ferrite core saturation and inductor short — EPCOS EMI/RFI filter inductors saturate when motor drive dV/dt exceeds design limits (especially in IGBT-based VFDs with short cable runs). Ferrite core fractures and winding shorts occur due to mechanical vibration stress in high-vibration environments like textile mills, crushers, and cement kilns.
- ✓Ceramic capacitor cracking and delamination in signal circuits — EPCOS ceramic capacitors experience thermal shock and mechanical stress when control panels are subjected to rapid temperature swings (monsoon humidity followed by sealed-enclosure heating). CTE mismatch between ceramic dielectric and metallic electrode causes internal micro-fractures.
- ✓Partial discharge and voltage flashover in high-voltage film capacitor stacks — EPCOS MKP film capacitor stacks in PFC or power supply applications experience partial discharge (PD) when terminal voltage approaches capacitor rated voltage, especially in high-altitude industrial zones (> 1500 m) where air density is lower. Moisture and conductive dust particles in capacitor casing accelerate PD inception.
How We Repair Your EPCOS 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 EPCOS Equipment
We serve plant maintenance teams across all major industries where EPCOS automation is deployed.
Frequently Asked Questions — EPCOS Repairs
Do you repair EPCOS capacitor banks and power factor correction modules across India?+
Yes. Synchronics repairs the complete EPCOS capacitor and power conditioning product range — MKP film capacitors, ECHU electrolytic modules, B3292 PFC banks, and EMI/RFI filters. We offer PAN India door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Surat, Nagpur, and all industrial cities. Same-day diagnostics and repair at our Vadodara, Gujarat facility.
What is the typical repair time for a failed EPCOS power factor correction bank?+
If the fault is a single capacitor module short circuit or loss of capacitance, repair takes 3-5 working days (capacitor swap-out and commissioning with harmonic analysis). If the thyristor, contactor, or inductor also requires rewinding, repair extends to 7-10 days. Emergency 24-hour rush repairs available for critical production lines. Synchronics provides detailed fault reports and commissioning certificates post-repair.
How do I know if my EPCOS capacitors are failing due to humidity or thermal stress?+
Common signs: (1) visible bulging or rupture of capacitor casing, (2) audible buzzing or humming from the capacitor bank, (3) burning smell near PFC or filter modules, (4) loss of power factor correction (PF drops below 0.95), (5) increased ripple voltage on DC power supplies. Synchronics uses ESR measurement, insulation resistance testing, and thermal imaging to pinpoint root cause — humidity-driven electrolyte loss versus thermal cycling degradation. We then recommend preventive measures (better ventilation, dehumidification, surge protection) to extend component life.
Can Synchronics supply genuine EPCOS spare capacitors, or do you only repair existing modules?+
Synchronics maintains stock of genuine EPCOS capacitors (MKP, ECHU, ceramic, and film types) for emergency same-day replacement. We can supply capacitors alongside repair services at competitive rates. We do NOT recommend non-EPCOS equivalents; substitutes may have different temperature coefficients, ESR, or voltage derating curves that compromise your system stability. We source directly from EPCOS/TDK authorized distributors to ensure authenticity and warranty.
Why do EPCOS film capacitors in Indian VFD-driven motors fail faster than expected?+
EPCOS MKP film capacitors in motor drive input filters experience accelerated aging due to: (1) high ambient temperature (40-50C summer peaks), (2) repetitive dV/dt stress from modern IGBT switching at 10+ kHz, (3) harmonic distortion from non-linear plant loads increasing capacitor core loss, (4) dusty and humid enclosure environments (monsoon ingress without proper IP rating). Synchronics recommends installing upgraded EPCOS capacitors with higher temperature rating (85C or 105C), detuned reactors to dampen harmonics, and improved enclosure ventilation. Regular PFC bank health checks (ESR trending) every 12 months help predict failures before catastrophic rupture.
How do I send my EPCOS 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 EPCOS 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 EPCOS 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 EPCOS 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.
EPCOS Repair Catalog
No products found for EPCOS
Don't See Your EPCOS Model Listed?
We repair the full range of EPCOS 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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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