CRYDOM Repair Services India
Crydom, headquartered in San Diego, USA, is a global leader in solid-state relay (SSR) technology, power switching, and thermal management solutions. Since 1962, Crydom has engineered innovative semiconductor-based control devices trusted by industrial manufacturers across India and worldwide. Their product portfolio spans DC and AC solid-state relays, three-phase relays, timers, and industrial temperature controllers — critical components in automation, process control, and power distribution systems.
Crydom, headquartered in San Diego, USA, is a global leader in solid-state relay (SSR) technology, power switching, and thermal management solutions. Since 1962, Crydom has engineered innovative semiconductor-based control devices trusted by industrial manufacturers across India and worldwide. Their product portfolio spans DC and AC solid-state relays, three-phase relays, timers, and industrial temperature controllers — critical components in automation, process control, and power distribution systems.
Synchronics Electronics has extensive hands-on experience diagnosing and repairing the complete Crydom product range, including Thyristor-based relays, MOSFET solid-state relays, DC drives, and process control modules. Our 180+ engineers understand Crydom's architecture, failure modes, and design specifications — whether dealing with input circuit failures, output stage degradation, or thermal management faults. We serve Indian manufacturing facilities, food processors, textile mills, and OEM integrators with fast turnaround Crydom repairs backed by technical expertise and quality assurance.
Expert diagnosis and repair of Crydom solid-state relays and thermal control devices across India.
CRYDOM Product Lines We Repair
Our engineers are trained on the full CRYDOM product range. Below are the major product families we service.
Solid-State Relays (DC Output)
DC solid-state relays with MOSFET or Thyristor output stages control DC loads in industrial automation. Common faults include input circuit open-circuit, gate drive circuit failure, MOSFET channel degradation, and thermal runaway due to poor heatsink contact.
Solid-State Relays (AC Output)
AC solid-state relays using Thyristor or Triac output stages switch AC motors, heaters, and loads in process control. Failure modes include trigger circuit malfunction, Thyristor turn-on delay, zero-crossing detection failure, and snubber network degradation causing false triggering.
Three-Phase Solid-State Relays
Three-phase SSRs control industrial three-phase motors and heaters in spinning mills, pump stations, and process equipment. Common issues include single-phase imbalance detection errors, asymmetric current distribution between phases, and gate driver IC failure affecting relay responsiveness.
Temperature Controllers and Timers
Crydom thermostat controllers and delay-on-make timers automate kiln firing, oven temperature control, and process sequencing in textile, ceramics, and chemical industries. Faults include sensor input conditioning failure, relay coil drive circuit burnout, and capacitor leakage affecting timing accuracy.
Electromechanical Solid-State Interface Modules
Hybrid control modules integrate Crydom relays with isolation transformers and surge suppression for harsh industrial environments. Repair focuses on transformer winding insulation breakdown, relay module interconnect corrosion, and input filtering capacitor failure.
DC and AC Power Switching Modules
Crydom power controllers regulate current flow in resistance heating, motor soft-start, and welding applications. Typical faults include overcurrent detection circuit malfunction, thermal sensor open-circuit, and phase-angle control PCB relay failure preventing load modulation.
Why Choose Synchronics for CRYDOM 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 CRYDOM 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 CRYDOM Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in CRYDOM equipment arriving at our workshop.
- ✓Solid-state relay output stage short-circuit failure — Crydom Thyristor or MOSFET output stage experiences junction breakdown due to electrostatic discharge, voltage transient spike, or sustained overcurrent exceeding rated load. Gate oxide degradation in MOSFET devices leads to leakage current and eventual conduction loss.
- ✓Trigger circuit failure preventing relay activation — Input signal conditioning circuit in Crydom AC solid-state relays suffers from gate driver IC failure, photodiode (LED) degradation, or coupling capacitor leakage. Zero-crossing detection circuit may fail due to transformer winding burnout or optocoupler aging.
- ✓Thermal runaway and heatsink interface degradation — Crydom solid-state relays dissipate high continuous current without adequate thermal contact between output stage and heatsink. Thermal compound dries out, mounting hardware loosens, or heatsink fins become dust-clogged in high-temperature process applications (kilns, furnaces). Temperature sensor open-circuit prevents over-temperature protection activation.
- ✓Intermittent relay closure and false triggering — Crydom AC solid-state relay experiences snubber network component failure (capacitor rupture or resistor thermal drift), causing voltage transient ringing across output. Contamination on PCB traces and connector pins introduces intermittent contact resistance. Trigger threshold IC drift causes false activation at half-wave voltage.
- ✓Loss of phase-angle control in power modulation circuits — Crydom DC or AC power controller relay module loses phase-angle modulation capability due to control PCB relay coil burnout, synchronization circuit IC failure, or potentiometer wiper contamination. Ramp generator capacitor leakage prevents linear current rise control.
- ✓Three-phase SSR asymmetric phase imbalance and single-phase load distribution — Crydom three-phase solid-state relay exhibits current unbalance across phases due to individual phase gate driver degradation, asymmetric heatsink cooling, or trigger threshold mismatch between phase channels. Load current concentrates on one or two phases, causing accelerated wear and incomplete power delivery.
How We Repair Your CRYDOM 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 CRYDOM Equipment
We serve plant maintenance teams across all major industries where CRYDOM automation is deployed.
Frequently Asked Questions — CRYDOM Repairs
Does Synchronics repair Crydom solid-state relays and power control modules across India?+
Yes. Synchronics is an authorized independent repair facility with expertise in the complete Crydom product portfolio — DC relays, AC relays, three-phase relays, temperature controllers, and power switching modules. We offer pan-India door pickup service from all major cities including Mumbai, Delhi, Bangalore, Chennai, Hyderabad, Pune, and Ahmedabad. All repairs are performed in our Vadodara, Gujarat facility and returned within 7-10 working days with full technical warranty.
What are the most common failure modes in Crydom solid-state relays used in Indian textile mills?+
Crydom AC solid-state relays in textile heater control applications typically fail due to thermal cycling stress (causing solder joint micro-cracking), dust accumulation on heatsinks blocking airflow, and moisture ingress triggering output stage leakage currents. Synchronics addresses these by replacing thermally stressed components, thoroughly cleaning heatsinks, and applying conformal coating to PCBs. We test repaired relays under repeated thermal cycling to simulate mill operating conditions.
Can Synchronics repair Crydom phase-angle power controllers that have lost current modulation capability?+
Absolutely. Phase-angle control failure is a specialty for Synchronics. We diagnose the synchronization circuit, control PCB relay coil, ramp generator, and potentiometer feedback path. Faulty components are replaced with Crydom-specified parts, and the controller is validated across the full 0-100 percent current range under resistive and inductive loads to confirm stable modulation before delivery.
What warranty and testing does Synchronics provide on repaired Crydom relays?+
All Crydom relays repaired by Synchronics receive a 12-month technical warranty covering parts and labor for the same fault. Before dispatch, every relay undergoes voltage isolation testing, load current verification, thermal monitoring, and dwell testing under rated operating conditions. We provide detailed test reports documenting input/output performance, thermal stability, and switching response time — essential documentation for critical industrial applications.
Are spare parts for Crydom relays available through Synchronics if repair is not feasible?+
Yes. Synchronics maintains a stock of genuine Crydom solid-state relays, thermal interface compounds, snubber components, and control PCB modules. If a relay is beyond economical repair, we can supply direct replacements with the same or upgraded performance rating. We also offer refurbished Crydom equipment from trusted sources for customers seeking cost-effective alternatives to new purchases.
How do I send my CRYDOM 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 CRYDOM 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 CRYDOM 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 CRYDOM 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.
CRYDOM Repair Catalog
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We repair the full range of CRYDOM 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