LiftMaster Chamberlain 41AC050-1M Garage Door Opener Circuit Board

LiftMaster 41AC050-1M Replacement Circuit Board

The LiftMaster 41AC050-1M replacement circuit board is a direct-fit solution for several LiftMaster and Chamberlain garage door opener models. This board is functionally identical to earlier versions labeled 41AC050-1, with the final letter denoting the model year. As long as the initial part number sequence matches, these circuit boards are fully interchangeable.

A faulty circuit board is a common cause of unresponsive remotes, malfunctioning keypads, or inconsistent sensor behavior. Replacing the board is a cost-effective alternative to replacing the entire opener unit. This replacement board restores full functionality, including travel limit settings, drive control, and remote programming via the built-in Learn button.

Compatible Models

• LiftMaster: 3245, 3255

• Chamberlain: PD210D, PD212D, HD200D

This board is also a replacement for legacy part numbers:

• 41AC050-1

• 41AC050-4M

Product Highlights

• Direct replacement circuit board for compatible garage door openers

• Fixes common operational issues such as remote control failure or safety sensor faults

• Built-in Learn button for easy remote control programming and travel adjustment

• Simple installation without the need for professional service in most cases

Installation Note

To prevent damage from electrical surges (including those caused by lightning), it is recommended to pair this board with a surge protector such as the LiftMaster 990LM. This precaution helps protect your new control board and prolong the life of your garage door opener system.

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