LiftMaster 041AB050-2M Receiver Logic Board – AC Belt Drive, Purple Learn Button

The LiftMaster 041AB050-2M is a genuine replacement receiver logic board with end panel for select LiftMaster and Chamberlain AC belt-drive garage door openers manufactured from 2005 through 2015.

This board uses 315 MHz Security+ wireless technology and is identified by its PURPLE Learn button.

The receiver logic board serves as the main electronic control center of the opener and also contains the radio receiver used to communicate with compatible remote controls and wireless accessories.

### Product Features

- Genuine LiftMaster / Chamberlain replacement part
- Current part number 041AB050-2M
- AC belt-drive receiver logic board
- 315 MHz Security+ radio system
- Purple Learn button
- Includes replacement end panel
- Designed for select openers manufactured from 2005–2015
- Controls primary opener electronic functions
- Receives signals from compatible remotes and wireless accessories
- Replacement for failed, damaged, or malfunctioning original board
- Model-specific electronic component

### Specifications

- Manufacturer: LiftMaster / Chamberlain
- Part Number: 041AB050-2M
- Alternate Numbers: 41AB050-2M / 41AB050-2 / 41AB050 / 41A5688
- Product Type: Receiver Logic Board with End Panel
- Drive Type: AC Belt Drive
- Radio Frequency: 315 MHz
- Security Technology: Security+
- Learn Button Color: Purple
- Production Range: Select 2005–2015 Openers
- End Panel Included: Yes
- Application: Residential Garage Door Opener

### What Is It Used For?

The 041AB050-2M is the main electronic control and radio receiver board inside compatible LiftMaster and Chamberlain belt-drive garage door openers.

It manages functions such as:

- Opener motor commands
- Remote-control communication
- Wireless accessory programming
- Safety-system communication
- Door operating logic
- Learn-button programming

If the original logic board fails, the opener may have power but no longer operate correctly.

### Common Signs of a Failed Logic Board

A properly diagnosed failed logic board may cause symptoms such as:

- Garage door opener does not respond to remotes
- Purple Learn button does not function
- Remote controls will not program
- Opener operates intermittently
- Door behaves unpredictably
- Electrical surge damages the circuit board
- Visible burned or damaged components
- Opener has power but electronic functions fail

These symptoms can also be caused by remotes, wiring, safety sensors, motor components, wall controls, or other opener problems.

Proper diagnosis is recommended before replacing the board.

### Purple Learn Button – 315 MHz Security+

The 041AB050-2M uses:

PURPLE LEARN BUTTON
315 MHz
SECURITY+

The Learn button color is one of the easiest ways to help identify the correct replacement-board generation.

Do not substitute this board for an opener using:

- Green Learn Button
- Red / Orange Learn Button
- Yellow Learn Button
- Security+ 2.0
- Security+ 3.0
- DC motor electronics

### Compatibility

The 041AB050-2M is designed for select LiftMaster and Chamberlain AC belt-drive garage door openers manufactured between 2005 and 2015.

Known compatible applications include select:

- LiftMaster 3280
- LiftMaster 3280C
- LiftMaster 3280-267
- Chamberlain HD600D
- Chamberlain WD822KD
- Other compatible AC belt-drive models using the same 315 MHz Purple Learn Button board

Compatibility varies by production date and opener configuration.

Always verify the original logic-board number and opener model before ordering.

### Part Number Cross-Reference

This board may be marked or referenced as:

- 041AB050-2M
- 41AB050-2M
- 41AB050-2
- 41AB050
- 41A5688

If your original board uses one of these numbers, still confirm the opener model and Purple Learn button before purchasing.

### AC Belt Drive Only

This board is specifically designed for compatible:

AC BELT-DRIVE OPENERS

It should not be confused with similar-looking boards used in AC chain-drive openers.

For example:

041AB050-2M = AC BELT DRIVE

041AC050-2M = AC CHAIN DRIVE

These boards should not be assumed interchangeable.

### End Panel Included

The 041AB050-2M is supplied as a receiver logic board and end-panel replacement assembly.

This helps simplify replacement when the original board and panel are serviced together.

### Programming After Installation

After replacing the receiver logic board, existing wireless devices may need to be programmed again.

These may include:

- Remote controls
- Wireless keypads
- Compatible wireless accessories

Follow the opener manufacturer's programming instructions after installation.

### Package Contents

Includes:

- 1 – LiftMaster 041AB050-2M Receiver Logic Board
- 1 – Replacement End Panel

Motor, rail, belt, remotes, wall control, safety sensors, and other opener components are not included unless specifically stated.

### Important Compatibility Note

This is a model-specific electronic replacement part.

Before ordering, verify:

- Opener model number
- Original board part number
- AC belt-drive configuration
- Purple Learn button
- 315 MHz Security+ system
- Approximate opener production date

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

### Important Installation & Electrical Safety

Disconnect the garage door opener from electrical power before removing the opener cover or replacing internal electronics.

Electronic circuit boards can be damaged by static electricity, incorrect wiring, electrical shorts, or installation into an incompatible opener.

After replacement:

- Program compatible remotes
- Program the wireless keypad if applicable
- Test wall-control operation
- Test safety reversing sensors
- Verify door travel
- Test automatic reversal
- Confirm normal opener operation through several complete cycles

If you are unsure whether the logic board is the cause of the opener problem, professional diagnosis is recommended before replacement.