Repair Process

Learn about ROC Industrial's detailed repair process for industrial automation equipment. To ensure quality and reliability, we follow specific, thorough procedures for each type of component we service. Find detailed process descriptions below for HMIs, Servo Drives, PLCs, Industrial Power Supplies, Circuit Boards, and Industrial Monitors.

2-4 WEEKS LEAD TIME

24

24 MONTH REPAIR WARRANTY

ISO CERTIFIED QUALITY

HMI Repair Process:

Every HMI repair at ROC Industrial begins with a thorough visual inspection upon arrival, checking for obvious physical damage to the screen, casing, keypad, or connectors. The unit is then carefully disassembled and meticulously cleaned to remove any dust or contaminants that could interfere with diagnostics or operation.
Our expert technicians utilize specialized diagnostic equipment, including multimeters, oscilloscopes, and signature analyzers, to test all critical components. We pay close attention to common failure points such as the power supply, display backlight and inverter/driver board, touchscreen digitizer and controller, keypad membranes, communication ports, and memory components. We test for correct voltages, signal integrity, and component tolerances.
Once the fault is identified, necessary repairs are performed by our skilled technicians using high-quality replacement parts and professional soldering techniques. We proactively replace components known to be failure-prone for the specific HMI model to enhance long-term reliability.
Following repair, the HMI undergoes rigorous testing. We verify power-up, display clarity, backlight brightness, touchscreen accuracy and calibration, keypad functionality (if applicable), and communication port operation using appropriate test fixtures and software. The unit is operated for an extended period to ensure stability before being final cleaned, reassembled, and prepared for return shipment, backed by our comprehensive warranty.

Servo Drive Repair Process:

Upon receiving your servo drive, our technicians perform a comprehensive visual inspection, looking for signs of physical damage, overheating, or component stress. The drive is then carefully disassembled and thoroughly cleaned to remove contaminants, ensuring accurate diagnostics.
Using advanced diagnostic tools like oscilloscopes, signature analyzers, component testers, and manufacturer-specific software, we test all critical sections of the drive. Common failure points such as the power supply section (capacitors, rectifiers, IGBTs/MOSFETs), control board, communication ports, and feedback circuits (encoder/resolver inputs) are meticulously checked for proper operation and component tolerances.
Faulty components identified during diagnosis are expertly replaced with high-quality, genuine or equivalent parts using professional soldering and rework techniques. We also proactively replace components known to have high failure rates in specific drive models to improve reliability.
After repair, each servo drive undergoes rigorous testing. This includes powering up the drive, checking power supply voltages, verifying communication, and performing full functional load testing using a compatible servo motor and test stand (dynamometer where applicable). We check output waveforms and performance against OEM specifications before the unit is final cleaned, reassembled, and securely packaged for return, complete with our comprehensive warranty.

PLC Repair Process:

The repair process for every PLC begins with a careful visual inspection to identify any obvious physical damage, corrosion, or component issues upon arrival. The PLC (including CPU, power supply, and any relevant modules sent) is then thoroughly cleaned to remove dust and contaminants.
Our technicians utilize specialized diagnostic equipment, including PLC test racks, programming software (like Studio 5000, TIA Portal, GX Works), multimeters, and oscilloscopes. We meticulously test the power supply module for correct output voltages, the CPU for processing errors and memory integrity, all I/O modules for proper input signal detection and output switching (testing relays, optoisolators, transistors), and communication ports for reliable data transfer. Common failure components like capacitors and relays are thoroughly checked.
Identified faulty components are replaced by our skilled technicians using high-quality parts and professional soldering methods. We also proactively address components known to be potential failure points based on the specific PLC model.
Following repair, the PLC system is rigorously tested. We load test programs, cycle inputs and outputs, verify communication protocols, and check battery backup functionality to ensure the entire system operates according to specifications. The unit is then final cleaned, reassembled, and prepared for secure shipment back to you, covered by our comprehensive warranty.

Power Supply Repair Process:

Each industrial power supply repair starts with a thorough visual inspection to check for physical damage, burnt components, bulging capacitors, or other obvious signs of failure. The unit is then carefully cleaned to remove any dust or contaminants that could affect performance or diagnostics.
Our technicians employ advanced diagnostic tools, including multimeters, oscilloscopes, electronic loads, power supply testers, and component analyzers (like LCR meters). We first check the input circuits (fuses, bridge rectifiers, input capacitors) before applying power. Once power is applied safely, we verify all output voltages and check for proper regulation under varying load conditions, including full load testing using electronic loads. We also test ripple voltage and protection circuits (OVP/OCP).
Faulty components identified during diagnosis, such as capacitors, rectifiers, switching transistors (MOSFETs/IGBTs), diodes, control ICs, and fuses, are replaced with high-quality, genuine or equivalent parts using professional soldering techniques. We also inspect and proactively replace components known to be common failure points.
After repairs are complete, the power supply undergoes comprehensive testing under full load conditions to ensure it meets or exceeds original manufacturer specifications for voltage stability, current delivery, and efficiency. The unit is then final cleaned and prepared for return shipment, backed by our comprehensive warranty.

Circuit Board Repair Process:

The repair process for printed circuit boards (PCBs) begins with a meticulous visual inspection under magnification, looking for any physical damage, burnt components, corrosion, cracked solder joints, or damaged traces. The board is then carefully cleaned using appropriate solutions to prepare it for diagnostics.
Our technicians utilize advanced component-level diagnostic tools, including Huntron Trackers, LCR meters, digital multimeters, oscilloscopes, thermal cameras, and specialized component testers. We test individual components (ICs, transistors, capacitors, resistors, diodes, etc.) both in-circuit and out-of-circuit (when necessary) to identify failures or components operating out of tolerance. We also check trace continuity and look for short circuits.
Faulty components are expertly removed and replaced with high-quality parts using professional soldering and rework stations suitable for both through-hole and surface-mount (SMT) technologies. Damaged traces, pads, or vias are repaired using industry-standard techniques like jumper wires or trace replacement.
Following component replacement and trace repair, the PCB is thoroughly tested for functionality. Whenever possible, the board is tested in the actual system it belongs to or using specialized test fixtures that simulate its operating environment. We verify all functions and ensure the original fault is resolved before the board is cleaned again, conformally coated (if necessary), placed in an anti-static bag, and prepared for shipment with our comprehensive warranty.

Industrial Monitor Repair Process:

Each industrial monitor repair begins with a thorough visual inspection, checking for screen cracks, housing damage, connector issues, or signs of liquid intrusion. The monitor is disassembled, and internal components are meticulously cleaned to remove dust and contaminants.
Our technicians diagnose the reported issue using specialized equipment. For display problems (no image, dim, flickering, lines, distortion), we test the LCD panel, backlight (CCFL or LED), inverter/driver board, T-Con board, and main logic board using monitor analyzers, backlight testers, and oscilloscopes. For power issues, we test the internal power supply components. For touchscreen problems, we test the digitizer and controller and perform calibration checks. Communication port failures are also diagnosed.
Faulty components identified during diagnosis – such as the LCD panel, backlight lamps/LEDs, inverter board, power supply components, main board ICs, or touchscreen assembly – are repaired or replaced with high-quality, genuine or equivalent parts using professional techniques.
After repair, the monitor undergoes comprehensive testing. We verify power-up, display clarity, brightness, color accuracy, resolution support, input signal detection (VGA, DVI, HDMI, etc.), and touchscreen functionality (if applicable). The monitor is run for an extended period (burn-in testing) to ensure stability before final cleaning, reassembly, and secure packaging for return shipment, covered by our comprehensive warranty.

Our Simple 7-Step Repair Process

1. Fill Out Form

Fill out our online Repair Request Form with item details.

3. Ship Your Item

Approve the quote and ship your item to Roc Industrial.

5. Diagnosis & Repair

Skilled technicians diagnose the fault and repair using quality parts.

7. Return Shipping & Warranty

Item is shipped back securely with a 2-year warranty.

2. Receive Free Quote

Get a free, no-obligation quote within 24 business hours.

4. Expert Cleaning

Item is thoroughly cleaned upon arrival to prepare for repair.

6. Thorough Testing

Repaired item is rigorously tested to ensure proper function.

Get Your Industrial Equipment Repaired Today!

Contact ROC Industrial for a free quote and expert industrial repair services.

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