LiftMaster 041DJ002MC Receiver Logic Board – RJO20 & 8500 Wall-Mount Openers

The LiftMaster 041DJ002MC is a genuine replacement receiver logic board for select LiftMaster and Chamberlain RJO-series wall-mount garage door openers.

This Security+ 2.0 logic board controls the opener’s electronic functions and wireless receiver system and features the Yellow Learn button used for programming compatible remotes and accessories.

The replacement assembly includes the logic board with mounting plate / bracket assembly for compatible applications.

### Product Features

- Genuine LiftMaster / Chamberlain replacement part
- Current part number 041DJ002MC
- Replaces 041DJ002 / 41DJ002
- Security+ 2.0 receiver logic board
- Yellow Learn button
- Designed for select wall-mount / jackshaft-style garage door openers
- Complete logic board with mounting plate / bracket
- Replacement for failed or damaged original control board
- Model-specific electronic component
- No rail or motor included

### Specifications

- Manufacturer: LiftMaster / Chamberlain
- Part Number: 041DJ002MC
- Previous Numbers: 041DJ002 / 41DJ002
- Product Type: Receiver Logic Board
- Radio Technology: Security+ 2.0
- Learn Button Color: Yellow
- Opener Type: Wall Mount / RJO
- Installation Location: Inside Opener Powerhead
- Mounting Plate / Bracket: Included
- Quantity: 1 Logic Board Assembly

### What Is It Used For?

The 041DJ002MC is the main receiver/control board inside compatible wall-mount garage door openers.

It manages electronic functions including communication between the opener and compatible controls and accessories.

The logic board is also responsible for the opener’s Security+ 2.0 radio receiver, allowing compatible remotes and wireless accessories to be programmed through the Yellow Learn button.

### Common Reasons for Replacement

A replacement logic board may be required when a properly diagnosed opener has symptoms such as:

- Opener does not respond correctly to controls
- Remote controls cannot be programmed
- Wireless receiver stops responding
- Yellow Learn button does not function properly
- Intermittent electronic operation
- Visible damage to the original circuit board
- Electrical or surge-related board failure

These symptoms may also be caused by wiring, power supply, travel module, wall control, safety sensors, motor components, or other opener problems.

Proper diagnosis is recommended before replacing an electronic control board.

### Compatible Models

Manufacturer documentation identifies the 041DJ002MC for select models including:

- Chamberlain RJO20
- Chamberlain RJO20C
- LiftMaster 8500
- LiftMaster 8500C
- Select related RJO-series wall-mount openers using the same board

Always verify the opener model, production generation, original board number, and replacement-parts diagram before ordering.

### Important 8500W Compatibility Notice

The 041DJ002MC should NOT be assumed compatible with the LiftMaster 8500W.

The 8500W uses a different Wi-Fi receiver logic board, commonly identified as:

050DCRJWFMC

If your opener is an 8500W, verify the number printed on the original logic board before purchasing.

### Yellow Learn Button / Security+ 2.0

The 041DJ002MC uses LiftMaster Security+ 2.0 technology and is identified by its:

YELLOW LEARN BUTTON

This is important when confirming compatibility.

Do not substitute this board for an opener using a different logic-board generation simply because the physical housing looks similar.

### Part Number Cross-Reference

This board may be identified as:

- 041DJ002MC
- 041DJ002
- 41DJ002

041DJ002MC is the current replacement number.

### Logic Board vs. Travel Module

The receiver logic board should not be confused with the opener’s separate travel module.

The compatible RJO20 system also uses a separate:

041B8861 – Travel Module with Wire Harness

If the opener has a travel-position or movement-detection problem, proper diagnosis is important before replacing the logic board.

### Package Contents

Includes:

- 1 – LiftMaster 041DJ002MC Receiver Logic Board
- Mounting Plate / Bracket Assembly

Motor, travel module, transformer, power cord, remotes, wall control, garage door lock, and other opener components are not included unless specifically stated.

### Important Compatibility Note

This is a model-specific electronic component.

Before ordering, verify:

- Garage door opener model
- Original logic board number
- Yellow Learn button
- Security+ 2.0 system
- Production generation
- Connector and mounting configuration

Do not order based only on the LiftMaster or Chamberlain brand.

### Important Installation Note

Disconnect electrical power and battery backup, if equipped, before opening the garage door opener or replacing internal electronic components.

Electronic circuit boards can be damaged by static electricity, incorrect connections, or electrical faults.

After replacement, compatible remotes and accessories may need to be programmed to the new receiver logic board.

Test the opener, safety sensors, remote controls, wall control, travel limits, and automatic reversal system before returning the garage door to normal service.