- Bad communication ports
- Broken selector/key switches
- Dead batteries/Bad Battery connections
- Solid or Blinking RED OK Status Light
- Solid or Blinking RED RUN Status Light
- Solid or Blinking RED Fault Status Light
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Allen Bradley 1774 PLCs and Modules Repair
We offer extensive repairs for your 1774 PLCs and Modules. We keep many spare parts in stock so that we can repair your 1774 PLCs and Modules as efficiently and effectively as possible. Our standard repair lead time is 3-5 days. However, we can often repair your unit much faster if necessary. We can repair most issues and if for some reason we cannot repair your unit we will do our best to offer a refurbished unit at the repair cost, so that you can get a working unit back as soon as possible!
- 2 Year DO Supply Warranty
- Fast repairs at low costs
- No surprises or up-charges for difficult repairs
- Standard lead time of 2-4 weeks
- Extensive quality control and testing
Get a repair quote
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's
warranty does not apply. All our products come with DO Supply's 2-year warranty.
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Hardware issues & error codes we repair
We repair all of the following hardware issues and error codes with your 1774 PLCs and Modules parts.
- Bad analog inputs or ouptus
- Bad digital input or outputs
- Bad relays (stuck on/off)
- Incorrect voltages on inputs or outputs
- Incorrect current on inputs or outputs
- DF1, DH-485, DH+, Profibus, Remote I/ (RIO) failures and more!
- Intermittent communication
- Solid RED/Blinkging RED communication lights
- Devicenet, Ethernet, ControlNet, RS232 ports.
- Missing CJC Jumpers
- Incorrect readings
- Failed inputs
- Dead power supplies
- Incorrect voltage
- Broken Plastic
- Poor Connections
- Bad Slots
Browse 1774 PLCs and Modules Repairs
Browse our catalog of repairable 1774 PLCs and Modules parts to get a quote.
1774-C12
The 1774-C12 module is an Allen-Bradley computer interface module. The part is categorized under the 1774 series and it features single-ended input and output impedance.
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1774-KA
The Allen-Bradley 1774-KA adapter is a communication adapter. The unit is built to support communication with different devices. This includes communication with programmable controllers, PCs, Fisher
In Stock Ships Today
1774-LC2
The 1774-LC2 module is a processor module manufactured by Allen-Bradley. The unit features the solid-state configuration type for ensuring ease of installation.
Available
1774-LD2
The 1774-LD2 module is an arithmetic module by Allen-Bradley. The unit comes with a fixed power supply module and a processor that is packaged as a single unit.
Available
1774-MA
The 1774-MA module is an Allen-Bradley memory module. The memory module weighs approximately 1.5 kilograms and it supports different memory modules, including those built by other vendors.
In Stock Ships Today
1774-P1
The 1774-P1 module is an Allen-Bradley PLC1 base power supply. It is designed to support high power applications.
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1774-PD
The 1774-PD module is a I/O module manufactured by Allen-Bradley. it has a compact design and fits into considerably small spaces.
Available
1774-RP3
The 1774-RP3 module is an Allen Bradley PLC5 module.
Available
1774-SD
The 1774-SD module is an Allen-Bradley Remote I/O module. It features the IP 20 enclosure with the modular/block design.
In Stock Ships Today
1774-SL
The 1774-SL module is an Allen-Bradley scanner module. The scanner module features 256K of memory space.
Available
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