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Automation Stop > Allen Bradley PLC Repair Services

Allen Bradley PLC Repair Services


Offering excellent turn around times with competitive prices.

Request a repair quote below.




We offer comprehensive repair services for Allen-Bradley PLCs including processors, I/O Modules, Communication Modules, high speed counters, RTD modules, Thermocouple modules, and many more. We offer fast turnaround and high repair success rates at competitive repair rates. Repairing your PLC can often be a more economical approach then buying a replacement unit. We have a simple straight forward repair process. First, we will send you an RMA with instructions about where to send your item, then after we receive the item, we will start repairing the unit. Once the repair is completed, we will contact you to determine shipping and payment method.


Common Allen-Bradley PLC issues we can repair:
  1. Defective Processors
    1. Bad communication port
    2. Bad key/switch
    3. Memory failure
    4. Solid red fault/ unrecoverable fault
    5. Communication fault/intermittent connection issues
    6. No indicator/fault lights
  2. Defective I/O modules
    1. Bad relays (Stuck open/closed)
    2. Bad inputs
    3. Bad outputs
    4. Sticking I/O
    5. Incorrect reading on channels
  3. Defective Power Supplies
    1. Dead power supplies
    2. Power supplies that keep blowing fuses
    3. Power supplies that will not power on the rack
    4. Power supplies that fault other modules on the rack
  4. Defective Rock/Chassis
    1. Modules don't power on in the rack
    2. Modules fault out when installed in the rack
    3. Plastic/metal is broken or bent
  5. Defective Specialty or Communications Modules
    1. Modules that won't communicate
    2. Modules that have an unrecoverable or solid red fault
    3. Modules that won't power on
Allen-Bradley/Rockwell Automation PLCs that we offer repair services on:
  • PLC 5
  • ControlLogix
  • CompactLogix (1769 5069)
  • SLC 500
  • SLC 100
  • SLC 150
  • MicroLogix 1000
  • MicroLogix 1100
  • MicroLogix 1200
  • MicroLogix 1400
  • MicroLogix 1500
  • Pico Controllers
  • Flex I/O
  • Point I/O
  • Block I/O
  • And many more!

Frequently Asked Questions for Allen Bradley PLC Repair Service:


How long does your repair service take?

Our AB PLC repairs are quoted at a 2-4 week lead time, but we can often get them completed much faster!


Where can I get my Allen Bradley PLC repaired?

We can repair your Allen-Bradley PLCs at our Repair Center in North Carolina!


Where can I get cheap Allen Bradley PLC repairs?

We offer competitive repair prices, we may not always be the cheapest but we offer quality repairs that we stand behind with our 1 Year Automation Stop warranty.


How do I find repair prices for Allen Bradley PLCs?

We list all of our Allen Bradley PLC and processor repair pricing on our website, if you don’t see a price or we are missing one please send us a quote request and we will get you pricing as fast as possible.


Do your repair services come with a warranty?

Yes, all our repairs come with our 1 Year Automation Stop Warranty.


Automation Stop sells used surplus products. Automation Stop is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by Automation Stop come with Automation Stop’s 1-year warranty and do not come with the original manufacturer’s warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

Rockwell Disclaimer: The product is used surplus. Automation Stop is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because Automation Stop is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Automation Stop also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. Automation Stop also makes no representations as to your right to install any such firmware on the product. Automation Stop will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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