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Danfoss power supply IGBT failure same-day service

ISO 9001:2015 Certified Quality

Our certified process ensures consistent quality and reliable repairs every time.

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2-Year Repair Warranty

We stand behind our repairs with an extensive 2-year warranty on parts and labor for your peace of mind.

Fast Turnaround Time

Our efficient process and large parts inventory help minimize your operational downtime.

Expert Component-Level Repair

We find and replace individual failed components, offering a more affordable and effective repair than full replacement.

Free, No-Obligation Quote

Send us your item for a free evaluation and receive a detailed repair quote with no commitment required.

Danfoss Power Supply Repair Services by Roc Industrial LLC

Is your Danfoss power supply malfunctioning? Roc Industrial LLC specializes in fast and reliable Danfoss power supply repair services to minimize downtime and keep your operations running smoothly. We understand the critical role these power supplies play in various industrial applications. With our experienced technicians and state-of-the-art equipment, we offer comprehensive repair, troubleshooting, and testing services for a wide range of Danfoss power supply models. Trust Roc Industrial LLC to provide expert solutions and get your equipment back in optimal condition quickly.



About Danfoss Power Supplies

Danfoss is a globally recognized leader in manufacturing high-quality power supplies and other industrial components. Their power supplies are known for their robust design, efficiency, and reliability, making them a popular choice in demanding applications across various industries. Danfoss power supplies are engineered to provide stable and consistent power, ensuring the optimal performance of critical equipment and systems. They are designed to withstand harsh environments and deliver long-lasting performance, contributing to increased productivity and reduced downtime.


Danfoss power supplies are widely used in industries such as manufacturing, automation, renewable energy, and HVAC. They are integral to powering CNC machines, robotic systems, industrial drives, and other essential equipment. Their advanced features, such as power factor correction, overvoltage protection, and short-circuit protection, make them a reliable choice for ensuring the safe and efficient operation of industrial processes. Roc Industrial LLC has extensive experience servicing these power supplies, understanding their intricate designs and common failure points.



Supported Models & Series

We repair a wide range of Danfoss power supply models and series, including but not limited to:

  • VLT Series Power Supplies

  • FC Series Power Supplies

  • MCD Series Soft Starters with Integrated Power Supplies

  • VACON Series Power Supplies

  • AKD Series Servo Drive Power Supplies

  • Custom Danfoss Power Supply Units (PSUs)

  • Various Danfoss DC Power Supplies

  • Danfoss AC Power Supplies


Common Danfoss Power Supply Problems We Repair

Danfoss power supplies, while reliable, can experience failures due to various factors such as component aging, environmental conditions, and power surges. Recognizing these issues early can prevent further damage and costly downtime. Roc Industrial LLC specializes in diagnosing and repairing a wide array of common Danfoss power supply problems.

  • No Output Voltage: The power supply fails to provide any output voltage, preventing connected devices from functioning.

  • Low Output Voltage: The output voltage is significantly lower than the specified value, leading to erratic behavior or malfunction of connected equipment.

  • Overvoltage Issues: The output voltage exceeds the specified limit, potentially damaging connected devices.

  • Communication Errors: The power supply fails to communicate with control systems or other devices, disrupting automated processes.

  • Overheating: The power supply overheats due to component failure, inadequate cooling, or excessive load.

  • Blown Fuses: Frequent blowing of fuses indicates an underlying issue such as a short circuit or component failure.

  • IGBT Failures: Insulated Gate Bipolar Transistors (IGBTs) are critical components that can fail due to stress or electrical surges, a common issue in Danfoss power supplies.

  • Capacitor Degradation: Electrolytic capacitors can degrade over time, leading to reduced performance and eventual failure.

  • Fan Failure: Cooling fan malfunctions can cause overheating and premature component failure.

  • Internal Component Failure: Resistors, diodes, and other internal components can fail, leading to various operational issues.

  • Power Cycling: The power supply turns on and off repeatedly, indicating a stability issue.

  • Audible Noise: Unusual buzzing or humming noises can indicate failing components or internal damage.


Our Danfoss Power Supply Repair Process

Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure the highest quality Danfoss power supply repairs. Our process is designed to quickly identify the root cause of the problem, implement effective solutions, and thoroughly test the repaired unit to guarantee optimal performance.

  1. Free Evaluation and Quote: We begin with a free evaluation of your Danfoss power supply to determine the extent of the damage and provide a detailed repair quote. This quote includes a breakdown of the costs for parts, labor, and any additional services required.

  2. Shipping Instructions: Once you approve the quote, we provide clear and concise shipping instructions to ensure your power supply arrives safely at our repair facility. We can also arrange for expedited shipping if needed.

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use advanced diagnostic tools and techniques to pinpoint the exact cause of the failure. We conduct thorough testing of all critical components to identify any underlying issues.

  4. Component-Level Repair and Replacement: We perform component-level repairs, replacing faulty components with high-quality replacements. We stock thousands of parts, including IGBTs, capacitors, and other critical components, to ensure fast turnaround times.

  5. Load Testing and Quality Checks: After the repair, we subject the power supply to rigorous load testing to simulate real-world operating conditions. This ensures that the unit performs reliably under various loads and operating parameters. We also conduct thorough quality checks to verify that all specifications are met.

  6. Warranty-Backed Return and Support: All our Danfoss power supply repairs are backed by a comprehensive warranty. We provide ongoing support to address any questions or concerns you may have after the repair. Our goal is to ensure your complete satisfaction with our services.


Nationwide Repair Services

Roc Industrial LLC provides Danfoss power supply repair services to customers nationwide. We understand that downtime can be costly, so we offer fast and reliable repair services to minimize disruptions to your operations. Whether you are located in New York, Los Angeles, Chicago, Houston, or Dallas, we can provide the expert repair services you need.


We offer fast shipping options and quick turnaround times to get your Danfoss power supply back in operation as soon as possible. Our streamlined repair process and extensive inventory of parts allow us to complete most repairs quickly and efficiently. Contact us today to learn more about our nationwide repair services and how we can help you keep your equipment running smoothly.



Why Choose Roc Industrial LLC?
  • 30+ Years of Experience: With over three decades of experience in industrial electronic repair, we have the knowledge and expertise to handle even the most complex Danfoss power supply repairs.

  • Warranty-Backed Repairs: All our repairs are backed by a comprehensive warranty, giving you peace of mind and assurance of quality.

  • Thousands of Parts in Stock: We maintain a large inventory of parts, including hard-to-find components, to ensure fast turnaround times.

  • Fast Turnaround, Often Same-Day: We understand the importance of minimizing downtime, so we offer fast turnaround times, often completing repairs the same day.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring that we adhere to the highest standards of quality and reliability.

  • Exceptional Customer Support: Our dedicated customer support team is available to answer your questions and provide assistance throughout the repair process.

Don’t let a faulty Danfoss power supply slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Danfoss power supply repair. We are committed to providing the highest quality repair services to keep your equipment running smoothly and efficiently. Roc Industrial LLC is your trusted partner for all your Danfoss power supply troubleshooting and repair needs. We also offer Danfoss power supply refurbishment services to extend the life of your equipment and reduce the need for costly replacements. Get your Danfoss power supply back in top condition with Roc Industrial LLC's expert services.

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