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Mitsubishi servo amplifier component-level repair and rebuild

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.

Mitsubishi Servo Amplifier Repair Services by Roc Industrial LLC

Is your Mitsubishi servo amplifier malfunctioning and causing downtime? Roc Industrial LLC specializes in comprehensive Mitsubishi servo amplifier repair services, ensuring your critical equipment is back up and running quickly and efficiently. Servo amplifiers are essential components in various industrial automation systems, providing precise control over motors in applications like robotics, CNC machines, and packaging equipment. When these amplifiers fail, it can lead to significant production losses. Roc Industrial LLC offers reliable, expert repair solutions to minimize downtime and keep your operations running smoothly. We pride ourselves on our speed, reliability, and deep expertise in repairing Mitsubishi servo amplifiers. Trust Roc Industrial LLC as your trusted repair provider.



About Mitsubishi Servo Amplifiers

Mitsubishi Electric is a globally recognized leader in industrial automation, and their servo amplifiers are renowned for their performance, reliability, and advanced features. Mitsubishi servo amplifiers are integral to a wide range of applications, including CNC machining, robotics, and general automation systems. These amplifiers are designed to provide precise motor control, enabling accurate positioning and speed regulation. Mitsubishi's commitment to innovation and quality has made their servo amplifiers a preferred choice for manufacturers worldwide.


Mitsubishi servo amplifiers are used extensively in industries such as automotive, aerospace, electronics, and food processing. Their robust design and advanced control algorithms ensure optimal performance even in demanding environments. From compact, low-power amplifiers to high-performance, multi-axis systems, Mitsubishi offers a comprehensive range of servo amplifiers to meet diverse application requirements. Roc Industrial LLC understands the critical role these amplifiers play in your operations and is dedicated to providing top-notch repair services to keep your equipment running at its best.



Supported Models & Series

We repair a wide range of Mitsubishi servo amplifier models and series, including but not limited to:

  • MR-J2S Series

  • MR-J3 Series

  • MR-J4 Series

  • MR-JE Series

  • MR-JN Series

  • MR-J2M Series

  • MR-C Series

  • MR-E Series

  • MELSERVO-J4 Series

  • MELSERVO-J5 Series

  • FR-A800 Series (Servo Amplifier Variants)

This list is not exhaustive. Contact us with your specific Mitsubishi servo amplifier model number for a free evaluation.



Common Mitsubishi Servo Amplifier Problems We Repair

Mitsubishi servo amplifiers, while highly reliable, can experience various issues over time due to wear and tear, environmental factors, or electrical surges. Recognizing these common problems can help you identify when a repair is necessary. Roc Industrial LLC is equipped to address a wide range of Mitsubishi servo amplifier failures.

  • No Output: The amplifier fails to provide power to the motor, resulting in complete system standstill.

  • Overvoltage Errors: The amplifier detects excessive voltage levels, triggering a fault and shutting down the system.

  • Overcurrent Errors: The amplifier detects excessive current draw, indicating a potential motor or wiring issue.

  • Communication Errors: The amplifier loses communication with the controller, preventing proper operation.

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

  • Blown Fuses: Fuses blow frequently, indicating an underlying electrical problem within the amplifier.

  • Encoder Faults: The amplifier reports errors related to the motor encoder, affecting positioning accuracy.

  • Positioning Errors: The motor fails to reach the commanded position accurately, leading to performance degradation.

  • Erratic Motor Behavior: The motor exhibits jerky or unstable movements, indicating control issues within the amplifier.

  • Drive Not Ready: The amplifier fails to initialize properly, preventing the system from starting up.

  • Parameter Errors: Incorrect or corrupted parameters cause the amplifier to malfunction.

  • Internal Component Failure: Failure of internal components such as capacitors, resistors, or transistors.

  • Power Supply Issues: Problems with the amplifier's internal power supply, leading to unstable operation.

  • Short Circuits: Internal short circuits causing immediate failure and potential damage.


Our Mitsubishi Servo Amplifier Repair Process

Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure the highest quality Mitsubishi servo amplifier repair. Our experienced technicians use state-of-the-art equipment and proven techniques to diagnose and resolve a wide range of issues.

  1. Free Evaluation and Quote: We begin with a free evaluation of your Mitsubishi servo amplifier to determine the extent of the damage and provide you with a detailed repair quote. There are no hidden fees, and you'll know the cost upfront.

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

  3. Diagnosis Using Specialized Test Equipment: Our technicians use advanced diagnostic tools and techniques to pinpoint the root cause of the problem. We thoroughly test all components and circuits to identify any underlying issues.

  4. Component-Level Repair and Replacement: We perform component-level repairs, replacing faulty components with high-quality replacements. We source our parts from trusted suppliers to ensure long-lasting performance.

  5. Load Testing and Quality Checks: After the repair, we subject the amplifier to rigorous load testing to verify its performance under real-world conditions. We conduct thorough quality checks to ensure it meets or exceeds original specifications.

  6. Warranty-Backed Return and Support: We stand behind our work with a comprehensive warranty. If you experience any issues after the repair, simply contact us, and we'll take care of it. We also provide ongoing technical support to answer any questions you may have.


Nationwide Repair Services

Roc Industrial LLC provides Mitsubishi servo amplifier repair services to customers nationwide. No matter where you are located, we can help you get your equipment back up and running quickly. We serve customers in major metro areas such as New York, Los Angeles, Chicago, Houston, and Dallas, as well as smaller towns and rural areas across the country.


We offer fast shipping options and quick turnaround times to minimize downtime. Our streamlined repair process and efficient logistics ensure that your amplifier is repaired and returned to you as quickly as possible. Contact us today to learn more about our nationwide repair services.



Why Choose Roc Industrial LLC?

When it comes to Mitsubishi servo amplifier repair, Roc Industrial LLC is the clear choice. We offer a unique combination of experience, expertise, and customer service that sets us apart from the competition.

  • 30+ Years of Experience: We have been providing industrial electronic repair services for over 30 years, giving us the knowledge and expertise to handle even the most complex repairs.

  • Warranty-Backed Repairs: We stand behind our work with a comprehensive warranty, giving you peace of mind knowing that your repair is protected.

  • Thousands of Parts in Stock: We maintain a large inventory of Mitsubishi servo amplifier parts, allowing us to complete repairs quickly and efficiently.

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

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring the highest standards of quality and consistency.

  • Exceptional Customer Support: We are committed to providing exceptional customer support. Our friendly and knowledgeable staff is always available to answer your questions and address your concerns.

Don't let a faulty Mitsubishi servo amplifier slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable repair. We are your trusted partner for all your Mitsubishi servo amplifier repair needs. We also offer Mitsubishi servo amplifier troubleshooting, testing, and refurbishment services.

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