DEC Repair Services India
Digital Equipment Corporation (DEC) was a pioneering American computer and electronics manufacturer that revolutionised industrial automation and process control. Although DEC's manufacturing operations shifted decades ago, thousands of DEC industrial controllers, PLCs, and embedded systems remain operational across Indian manufacturing plants, textile mills, chemical facilities, and food processing units. DEC's robust architecture and longevity make these systems integral to legacy installations.
Digital Equipment Corporation (DEC) was a pioneering American computer and electronics manufacturer that revolutionised industrial automation and process control. Although DEC's manufacturing operations shifted decades ago, thousands of DEC industrial controllers, PLCs, and embedded systems remain operational across Indian manufacturing plants, textile mills, chemical facilities, and food processing units. DEC's robust architecture and longevity make these systems integral to legacy installations.
Synchronics Electronics specialises in restoring and repairing DEC industrial control systems, embedded processors, and legacy automation modules still running in Indian factories. Our 180+ engineers possess deep knowledge of DEC's proprietary hardware, firmware, and communication protocols. We repair DEC PDP series computers, DECNET interfaces, and industrial I/O modules that many Indian plants depend on for critical process control—often with zero tolerance for downtime.
Expert DEC legacy system restoration and embedded processor repair across India.
DEC Product Lines We Repair
Our engineers are trained on the full DEC product range. Below are the major product families we service.
DEC PDP Series Computers
Iconic 16-bit and 32-bit minicomputers (PDP-11, PDP-8) used for real-time process control, data acquisition, and industrial automation. Common issues include power supply failure, memory errors, and disk drive degradation affecting production lines.
DEC Industrial I/O Modules
UNIBUS and QBUS-based input/output interface cards for sensor acquisition and actuator control. Failures include relay burnout, analog signal conditioning circuit failure, and optical isolation component degradation.
DEC DECNET Network Interface Cards
Legacy networking modules enabling DEC systems to communicate across manufacturing plants. Repairs address packet loss, transceiver failures, and protocol stack corruption affecting process synchronisation.
DEC Memory and Storage Modules
Core memory, semiconductor RAM, and disk drive controllers (RK05, RL01, RL02). Common faults include parity errors, read/write head failure, and controller card shorts affecting system reliability.
DEC Embedded Real-Time Processors
Microcontroller modules and real-time executives (RSX-11M) used in textile looms, printing presses, and chemical reactors. Issues include firmware corruption, watchdog timer failure, and interrupt controller malfunction.
Why Choose Synchronics for DEC 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 DEC 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 DEC Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in DEC equipment arriving at our workshop.
- ✓DEC PDP core memory parity errors — Core memory degradation after decades of operation causes bit flip errors and halt conditions. Indian industrial environments with power fluctuations accelerate failure.
- ✓UNIBUS termination and bus timeout errors — Loose terminators, corroded connectors, and failing UNIBUS interface cards cause intermittent device timeouts and system hangs affecting production control.
- ✓Power supply failure in DEC industrial controllers — Electrolytic capacitor aging, transformer insulation breakdown, and rectifier diode failure—typical in older PDP systems running continuously in harsh plant environments across India.
- ✓DEC disk drive read/write failures — RK05, RL01, RL02 drives suffer head crash, spindle bearing wear, and stepper motor failure after extended operation. Indian humidity and dust accelerate mechanical wear.
- ✓DECNET transceiver and coax cable failures — Corroded BNC connectors, damaged twisted-pair cable, and failed optical isolation circuits break plant-wide process synchronisation across DEC network segments.
- ✓DEC analog input/output signal conditioning noise — Capacitor leakage, operational amplifier drift, and ground loop coupling in AD01, DA01 modules produce erratic sensor readings and actuator instability affecting process control accuracy.
How We Repair Your DEC 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 DEC Equipment
We serve plant maintenance teams across all major industries where DEC automation is deployed.
Frequently Asked Questions — DEC Repairs
Do you repair DEC equipment anywhere in India?+
Yes. Synchronics repairs the full DEC product range — PDP minicomputers, UNIBUS/QBUS I/O modules, DECNET interfaces, and embedded real-time processors. We offer PAN India door-to-door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Nagpur, and all other major cities. All repairs happen at our central facility in Vadodara, Gujarat, with transparent turnaround tracking.
Can you repair DEC PDP-11 systems that have been offline for years?+
Absolutely. Many Indian textile mills and chemical plants have PDP-11 systems in storage. Synchronics performs full system diagnostics, power supply reformation, memory testing, and software recovery. We restore dormant PDP systems to production-ready status—often as backup control when modern systems fail. Documentation and spare parts sourcing are included.
What do you do if DEC spare parts are no longer manufactured?+
Synchronics maintains an inventory of recovered DEC components and certified refurbished modules from decommissioned systems. For obsolete ICs and rare boards, our engineers employ reverse engineering, FPGA emulation, and functional equivalent substitution—all maintaining original system compatibility. We never force system replacement when repair is viable.
How do you handle DEC firmware and software recovery?+
DEC systems often rely on paper tape, magnetic cartridge, or floppy-based boot loaders. Synchronics has legacy media readers, RSX-11M source archives, and RT-11 disk imaging capability. We recover lost firmware, restore system configurations, and validate boot sequences before returning systems to Indian manufacturing plants.
Are DEC repairs cost-effective compared to replacing legacy systems?+
Yes. Replacing a DEC-based control system costs lakhs and requires complete re-engineering of sensor interfaces and production workflows. Synchronics repairs typically cost 15-25% of replacement cost and preserve proven system stability. Indian plants with DEC systems running mission-critical processes (textile weaving, chemical batching, pharmaceutical dispensing) choose repair to minimise downtime and investment.
How do I send my DEC 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 DEC 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 DEC 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 DEC 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.
DEC Repair Catalog
No products found for DEC
Don't See Your DEC Model Listed?
We repair the full range of DEC 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