- 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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+1 (919) 205-4392
Allen Bradley PLC 3 Repair
We offer extensive repairs for your PLC 3. We keep many spare parts in stock so that we can repair your PLC 3 as efficiently and effectively as possible. Our standard repair lead time is 2-4 weeks. However, we can often repair your unit much faster if necessary. We can repair most issues with your PLC 3 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 of 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 PLC 3 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 PLC 3 Repairs
Browse our catalog of repairable PLC 3 parts to get a quote.
1775-L3
This CPU boasts a bit-slice microprocessor and includes access to four 50-pin expansion ports for additional functionality. It is compatible with PLC-3 main and expansion racks, allowing for seamless
In Stock Ships Today
1775-L4
The 1775-L4 processor module is engineered for seamless integration with a single slot requirement and the ability to expand processor capabilities. Featuring a flexible data table and support for mul
Available
1775-LP8
This processor module is designed to occupy one slot within the 1771 I/O chassis. It supports a temperature operating range from 0 to 60 °C and can handle humidity levels between 5% and 95% (non-conde
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1775-LPA
This versatile PLC module is designed to function within an operational temperature range of 32 to 104 degrees Fahrenheit. It can be stored safely at temperatures between 32 and 122 degrees Fahrenheit
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1775-LS
This mini processor module supports a RAM storage of 2k words in CMOS and accommodates up to 488 timers and counters. It operates within a temperature range of 0°C to 50°C and can function at altitude
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1775-LX
With a current rating of up to 5.0 A and a logic current of 80 mA, this module ensures reliable operation. It can withstand operating temperatures between 0 °C and 40 °C and remains functional within
In Stock Ships Today
1775-LXA
This module supports an operating temperature range from 0 °C to 60 °C and can be stored safely between -40 °C and 85 °C. With an installation altitude of up to 1000 meters, it remains effective in va
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1775-M54
The 1775-M54 is an accessory memory module for PLC 3 systems, supporting rack mounting. It maintains operational effectiveness across a temperature range of 0 to 40 degrees Celsius and can operate in
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1775-M58
This memory module requires a supply voltage ranging from 5 to 15 volts DC, with a backplane current draw of 2.6 Amperes. It features a slot mounting method for installation and can work within a freq
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1775-MC4
This module supports application storage in a compact design and utilizes 16K of core memory. It operates effectively in temperature ranges from 0 to 40 degrees Celsius. The unit can endure up to 80%
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