SELEC Repair Services India
SELEC (Systems & Electronics Control Pvt. Ltd.) is an Indian manufacturer of power control, energy management, and industrial automation solutions established in 1991. Based in Pune, SELEC specialises in voltage stabilisers, power conditioners, Uninterruptible Power Supplies (UPS), servo voltage stabilisers (SVS), and automation control systems. Their equipment protects critical industrial and commercial infrastructure across India and South Asia from power quality issues, voltage fluctuations, and load transients.
SELEC (Systems & Electronics Control Pvt. Ltd.) is an Indian manufacturer of power control, energy management, and industrial automation solutions established in 1991. Based in Pune, SELEC specialises in voltage stabilisers, power conditioners, Uninterruptible Power Supplies (UPS), servo voltage stabilisers (SVS), and automation control systems. Their equipment protects critical industrial and commercial infrastructure across India and South Asia from power quality issues, voltage fluctuations, and load transients.
Synchronics Electronics has repaired SELEC power conditioning and voltage stabilisation equipment since the mid-1990s. We service the complete SELEC product range including SVS units, UPS systems, automatic voltage regulators (AVR), and industrial control modules. Our 180+ engineers understand SELEC's proprietary control circuits, thyristor firing mechanisms, and maintenance requirements. We handle warranty repairs, breakdown servicing, and preventive maintenance contracts for SELEC users across automotive, pharma, food processing, textiles, and data centre sectors in India.
Expert SELEC power stabiliser and UPS repair across all Indian manufacturing and infrastructure sectors.
SELEC Equipment We Repair — By Category
SELEC Product Lines We Repair
Our engineers are trained on the full SELEC product range. Below are the major product families we service.
Servo Voltage Stabilisers (SVS)
SELEC SVS units use servo-controlled autotransformers to correct voltage variations in real-time. Common faults include thyristor damage, control card failures, phase loss detection errors, and servo motor wear. Used heavily in CNC machine shops, injection moulding plants, and pharmaceutical manufacturing.
Uninterruptible Power Supplies (UPS)
SELEC online and offline UPS systems for mission-critical loads. Faults typically involve inverter module failures, battery charging circuit faults, static switch misfire, and bypass contactor wear. Widely deployed in hospitals, data centres, and telecom infrastructure.
Automatic Voltage Regulators (AVR)
Compact stepped voltage regulation units for industrial panels. Common failures include relay coil burnout, tap selector mechanism jam, control transformer short circuits, and output contactor stiction. Standard in small manufacturing units and branch offices.
Power Quality Monitors & Controllers
SELEC intelligent power monitoring and conditioning modules with harmonic filtration and PFC. Repairs involve ammeter card damage, PLC input/output card faults, current transformer issues, and sensor calibration drift.
Industrial UPS Modules & Battery Management
Modular battery charging and management units for larger installations. Faults include rectifier diode failure, battery equalization circuit faults, temperature sensor malfunction, and charger regulation drift under load.
Panel-Mount Power Control Units
Integrated power distribution and load control modules for industrial automation cabinets. Issues include relay card failures, time delay circuit faults, thermal overload mechanism wear, and terminal corrosion.
Why Choose Synchronics for SELEC 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 SELEC 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 SELEC Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in SELEC equipment arriving at our workshop.
- ✓SVS thyristor short or open circuit failure — SELEC SVS units use power thyristors in the servo control circuit. Thyristors fail due to gate drive circuit faults, transient spikes on the control winding, or sustained over-voltage from the load. Aged solder joints on the main PCB also cause intermittent gate drive loss.
- ✓UPS inverter card short or blown components — SELEC UPS inverter modules use isolated MOSFET or IGBT stages. Inverter failure occurs when the PWM control loses feedback due to optical isolator failure, when the DC link capacitors age, or when the freewheeling diodes are degraded. Overload transients can also trigger gate oxide breakdown.
- ✓AVR relay coil burn-out and output contactor chatter — SELEC AVR units depend on electromagnetic relays and contactors for tap selection and output switching. Coil burn happens from sustained energization due to stuck plunger cores or failed solenoid springs. Contactor chatter results from worn contact surfaces, spring fatigue, or low supply voltage to the coil.
- ✓Battery charger regulation drift and float voltage creep — SELEC battery charging circuits use linear or PWM regulators that control the charging voltage via feedback resistor networks. Aging electrolytic capacitors in the feedback loop, thermistor sensor drift, or transformer secondary voltage sag cause the float voltage to drift above 13.8V per 12V bank, leading to battery overcharge and terminal corrosion.
- ✓Power quality monitor card display or sensor failure — SELEC PQM units employ LCD/LED display modules and multiple voltage/current input transformers. Display faults stem from loose LCD ribbon connectors, failed backlight LEDs, or corrupt display driver circuits. Sensor failures occur when CTs develop internal short circuits or when ammeter PCB traces corrode due to salt spray in coastal industrial areas.
- ✓Static switch bypass contactor misfire or sync loss — SELEC UPS static switches use carefully timed contactor closure to transfer between inverter and bypass power. Contactor misfire happens when the microcontroller loses sync due to corrupted program memory, failed zero-crossing detector, or gate drive isolation failure. Worn contacts also prevent reliable current path transfer.
How We Repair Your SELEC 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 SELEC Equipment
We serve plant maintenance teams across all major industries where SELEC automation is deployed.
Frequently Asked Questions — SELEC Repairs
Do you repair SELEC equipment anywhere in India?+
Yes, Synchronics repairs the complete SELEC product range across India. We service SVS units, UPS systems, automatic voltage regulators, power quality monitors, and battery management modules. We offer PAN India door pickup and courier from all major cities including Mumbai, Delhi, Pune, Hyderabad, Bangalore, Chennai, Ahmedabad, Kolkata, and smaller industrial towns. All repairs are carried out at our main facility in Vadodara, Gujarat, where we maintain SELEC test benches and OEM spare inventory.
What is the typical repair turnaround for SELEC servo voltage stabilisers?+
Routine SELEC SVS repairs like relay/contactor replacement or control card refurbishment take 5-7 working days. Complex faults involving thyristor circuit re-design or servo motor replacement take 10-14 days. All units are load-tested on our 3-phase variable transformer test rig for 4 hours before return. Expedited service is available for critical installations at additional cost — contact our field support team for priority handling.
Can you recondition SELEC UPS battery modules and charger circuits?+
Yes. Synchronics thoroughly reconditons SELEC UPS and battery charger modules. We replace aged electrolytic capacitors, re-trim charger output voltage and current limits, clean coroded PCB traces, and verify temperature compensation. Battery equalization circuits are tested under controlled discharge to ensure balanced charging across cells. All units return with a 6-month repair warranty covering parts and labour.
Do you have SELEC OEM spare parts in stock?+
Synchronics maintains stock of common SELEC spares including relay modules, contactors, control transformers, servo motors, thyristors, MOSFETs, bridge rectifiers, and electrolytic capacitors. For model-specific PCBs, inverter modules, or LCD display units, we source directly from SELEC or authorized distributors. Lead time is typically 3-5 days for most parts within India. We always discuss parts availability before committing to repair turnaround timelines.
What certifications and standards does Synchronics follow for SELEC repairs?+
Synchronics is ISO 9001:2015 certified for repair and refurbishment services. All SELEC repairs adhere to the company's original design specifications and electrical safety standards (IEC 61010 for power supplies, IEC 62040 for UPS systems). We maintain detailed test reports with before-and-after measurements, load curves, and efficiency data. Warranty claims and service history are documented and available to customers for compliance and audit purposes.
How do I send my SELEC 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 SELEC 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 SELEC 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 SELEC 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.
SELEC Repair Catalog
Showing 1–2 of 2 SELEC products

Other Brands We Repair in the Same Categories
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
