APT Repair Services India
Advanced Power Technology (APT) is a leading USA-based manufacturer of discrete power semiconductors and integrated power modules for industrial motor drives, renewable energy systems, and high-reliability applications. With a strong presence in Indian manufacturing and OEM sectors, APT power modules and IGBT solutions are extensively used in variable frequency drives and servo amplifiers across automotive, textiles, steel, and renewable energy industries.
Advanced Power Technology (APT) is a leading USA-based manufacturer of discrete power semiconductors and integrated power modules for industrial motor drives, renewable energy systems, and high-reliability applications. With a strong presence in Indian manufacturing and OEM sectors, APT power modules and IGBT solutions are extensively used in variable frequency drives and servo amplifiers across automotive, textiles, steel, and renewable energy industries.
Synchronics Electronics specializes in repairing APT power semiconductor modules, IGBT gate drivers, and integrated motor drive solutions. Our 180+ engineers have extensive experience diagnosing and repairing APT power modules, thermal management faults, and gate driver circuit failures. We provide fast turnaround repairs for APT-based VFD drives and servo systems used throughout Indian manufacturing and steel plants.
Expert repair of APT power modules, IGBT drivers, and integrated power solutions across all Indian industrial sectors.
APT Product Lines We Repair
Our engineers are trained on the full APT product range. Below are the major product families we service.
APT Power Modules (IGBT & Power Diode)
Discrete and integrated power semiconductor modules used in VFD drives, servo amplifiers, and welding equipment. Common issues include IGBT gate oxide failure, thermal cycling damage, solder joint cracking under vibration, and gate driver IC failures.
APT Gate Driver ICs
Isolated gate driver circuits for controlling IGBT and power MOSFET switches. Repair focuses on gate signal loss, supply rail faults, and photocoupler optoisolator degradation leading to gate drive circuit malfunction.
APT Integrated Power Modules (Smart Power Modules)
Intelligent power modules integrating IGBT, gate driver, and protection circuits for VFD, servo drive, and motion control applications. Common faults include module delamination, solder reflow failures, and control logic IC burnout.
APT Power Rectifier Modules
High-current three-phase bridge rectifier modules used in AC-DC front-end stages of industrial drives. Typical failures include diode leakage, module overheating, and thermal interface material degradation.
Why Choose Synchronics for APT 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 APT 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 APT Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in APT equipment arriving at our workshop.
- ✓IGBT Gate Oxide Breakdown and Short Circuit — APT IGBT modules suffer gate oxide rupture due to voltage overspike during switching, EMI coupling on gate traces, or long-term electromigration under high-frequency PWM switching. Common in 10-20 kHz VFD applications with inadequate gate trace filtering.
- ✓Thermal Cycling Solder Joint Failure — APT power modules mounted on aluminum busbars or heatsinks experience repeated thermal expansion-contraction cycles during motor start-stop duty. Solder interconnects between module base plate and busbar fatigue, causing intermittent open circuits and rising junction temperature.
- ✓Gate Driver IC Loss of Signal / No Gate Drive — APT gate driver ICs (e.g., APT2138NT) fail due to supply rail collapse, photocoupler aging in galvanic isolation stage, or saturation of the output stage under short-circuit load. Indian textile mills and steel plants running 24/7 duty see accelerated photocoupler degradation.
- ✓Module Delamination and Base Plate Separation — APT integrated power modules experience moisture ingress and delamination between die attach epoxy and ceramic substrate, particularly in high-humidity environments common in Indian coastal plants (Mumbai, Chennai, Visakhapatnam). Thermal cycling accelerates delamination onset.
- ✓Diode or Freewheeling Diode Reverse Leakage — APT power module antiparallel diodes develop reverse leakage over time due to junction defects, electromigration, or thermal stress. This causes excessive idle current drain and heat generation even at no-load conditions in variable frequency drives.
- ✓Thermal Interface Degradation and Overheating — APT power modules mounted on heatsinks with aged thermal grease or silicone pad develop high interface thermal resistance. Combined with dust accumulation in Indian manufacturing environments, junction temperature rises 20-30°C above normal, triggering thermal shutdown faults.
How We Repair Your APT 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 APT Equipment
We serve plant maintenance teams across all major industries where APT automation is deployed.
Frequently Asked Questions — APT Repairs
Do you repair APT power modules and gate drivers anywhere in India?+
Yes. Synchronics repairs the full APT power semiconductor product range - IGBT modules, gate driver ICs, integrated power modules, and rectifier modules. We offer PAN India door pickup and delivery from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Surat, and all other cities. All repairs are performed at our Vadodara facility with 24-48 hour turnaround for critical VFD repairs.
What APT IGBT modules do you commonly repair in Indian VFD applications?+
We regularly repair APT's 600V IGBT module series (APT10020L2VRG, APT20020L2VRG, APT30020L2VRG, APT50020L2VRG) used in 5-75 HP VFD drives for textile mills, steel plants, and water pumping. Common faults include gate oxide damage, thermal cycling solder failures, and freewheeling diode leakage. We test all repaired modules on our VFD load bank before return.
How do you diagnose APT gate driver IC failure in a VFD?+
Synchronics isolates the gate driver circuit, measures optocoupler input-output response, checks supply rail voltage stability under switching load, and uses an oscilloscope to verify gate pulse rise time and dead time. We then bench-test the APT gate driver board in our lab with a dummy IGBT module and pulse generator to confirm gate drive quality before customer redelivery.
Can you repair APT power modules with thermal cycling solder joint cracks?+
Yes. We identify cracked solder joints using X-ray imaging or thermal camera during thermal cycling test. We then remove the APT module, clean the busbar, and re-solder all terminals using lead-free SAC305 solder with flux chemistry optimized for aluminum busbars. We then perform thermal cycling testing (0-100°C, 10 cycles minimum) and electrical continuity verification before return.
What is the typical repair turnaround time for APT modules at Synchronics?+
Standard APT power module and gate driver repairs take 3-5 business days including diagnostic testing, repair, and functional validation. For emergency VFD drive repairs at textile mills or steel plants, we offer 24-hour express service with pickup same day and return next day. All repairs carry 90-day warranty and include detailed test reports.
How do I send my APT 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 APT 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 APT 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 APT 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.
APT Repair Catalog
No products found for APT
Don't See Your APT Model Listed?
We repair the full range of APT 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