Allen-Bradley 1756-L74 ControlLogix – Repair Service Available
The Allen-Bradley 1756-L74 is a 16 MB ControlLogix 5570 controller. NJT Automation offers mail-in repair for the 1756-L74 with a 1-year warranty; replacement pricing is available on request.
Mail-in repair available now. Returned with a 1-year warranty. Replacement pricing on request.
| Price | On Request Previously sold for $1,149.99 - $2,599.99 USDAvailability and condition determine final quote. |
| Description | ControlLogix 5570 controller, 16 MB. |
| Shipping | UPS Ground included | Next-Day Air and Worldwide Shipping available at checkout |
| Warranty | 1-year full-function warranty provided by NJT Automation.Warranty detailsThe original Allen-Bradley warranty does not apply to pre-owned units. Full warranty coverage is provided directly by NJT Automation. If you have any issues we can usually swap your unit next-day air (based on inventory)-no waiting weeks for a repair. Included: 1 Year +1 Year: +15% of product price ($172.50) +2 Years: +25% of product price ($287.50) |
| Returns | 90-day free returns on all purchases.View return policy |
| Exchange | Send us your defective 1756-L74 after your purchase for a 10% core credit. We also purchase old or damaged parts outright. |
| Availability | Available Level 1This part is available through our Level 1 supplier network. Request a quote to confirm quantity, price, and next-day shipping options. |
Inventory Level 1 RFQ | Level 1 parts come from vetted US suppliers we have worked with for years. Each unit is checked before it ships, so counterfeits, repackaged items sold as new, and worn-out equipment do not reach you. Every part carries the same NJT warranty and return policy as our own stock. |
| Repairs | 1756-L74 Mail-In Repair ServiceEstimated: $1,440.00 |
How the Process Works: |
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What We Offer | We source genuine parts from trusted U.S. channels and stand behind what we sell.
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Part Number Decoder | ControlLogix 5570 controller 1756L74 16 MB ControlLogix 5570 controller.
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here. |
Similar Part Numbers | |
Allen Bradley Information | Technical Description ControlLogix Logix5574 Controller with 16 Mbytes Memory + 1 x Built-in USB 2.0 Programming/Download Port |
Alternate Part Numbers | 1756L74 |
| Category | ControlLogix |
| Part Number | 1756-L74 |
| Manufacturer | Allen-Bradley |
Previously sold 1756-L74
6 soldNJT Automation has supplied and shipped 6 1756-L74 ControlLogix 5570 controllers, with 6 sold on our eBay store. Request a quote and we will source another from our supplier network.
Can the 1756-L74 be repaired?
Yes. NJT Automation offers mail-in repair for the 1756-L74, including diagnostic evaluation, component-level repair, and functional testing.
One vendor. One warranty. NJT manages the entire process.
- 1-year full-function NJT warranty, with 2- and 3-year options available
- Rush service available for production-critical repairs
- No evaluation or diagnostic charges
- No repair, no charge
- Pre-paid UPS shipping label provided for sending your unit in
- $650 minimum repair charge, shipping included both ways
Looking for another option? For lower-cost repairs or if you prefer to work directly with an independent repair specialist, compare bids through RepairMode. RepairMode providers operate independently and set their own pricing and warranty terms.
Find a PLC repair specialiston RepairMode.com ↗Common 1756-L74 failures
Failure patterns we regularly see on ControlLogix 5570 controller hardware like the 1756-L74:
- Program lost on power cycle: energy storage module (1756-ESMCAP / ESMNSE) failing to hold the controller through a save
- Solid red OK LED (nonrecoverable major fault) that returns after clearing
- SD card corruption preventing the stored project from loading at power-up
- Front USB port failure: Studio 5000 will not connect over USB
- Scrolling status display blank or unreadable
- Backplane communication faults from bent chassis pins after repeated module swaps
Repair or replace?
Why Choose Our Repair Service?
- ■ Rush turnaround available, with 24-hour emergency service on some models
- ■ 1-year full-function warranty, with 2- and 3-year extended options
- ■ No evaluation or diagnostic charges
- ■ Free UPS shipping label available
- ■ "Unrepairable" is not an option
- ■ Thousands of successful Allen-Bradley restorations
Request a Repair Quote
Ready to repair your 1756-L74? Request a repair quote below. For immediate assistance, text photos of your faulty unit and a description of the symptoms to (414) 331-5954.
All product photos were taken by NJT Automation. Test videos originated from either NJT Automation internally or from repair technicians within our network.
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