LiftMaster 41A5483-1C Receiver Logic Board Assembly

The LiftMaster 41A5483-1C Receiver Logic Board Assembly is an OEM replacement control board for select LiftMaster, Chamberlain, and compatible Craftsman residential garage door openers. This main control/receiver board manages the opener’s motor, Safety Sensor inputs, wall control, and remote/keypad radio functions. It is designed for models that use LiftMaster Security+ rolling code technology with a purple Learn button, which indicates 315 MHz radio compatibility. When installed, it restores proper operation of remote controls and keypads such as the Security+ 315 MHz remotes (e.g., 371LM/373LM) and wireless keypads (e.g., 377LM), and continues to support standard safety features like photoelectric safety reversing sensors required for UL 325 compliance.

Use this assembly to replace a failed or damaged logic board to resolve issues like non-responsive remotes, erratic operation, or fault indications related to control electronics. Installation typically involves unplugging power, removing the opener’s cover, transferring all wire harnesses and terminal connections from the old board to the new one, mounting the board, and then re-establishing opener settings. After replacement, you must reprogram all handheld remotes and keypads via the purple Learn button and reset travel limits and force settings per the opener’s manual. For correct compatibility, confirm your opener’s Learn button is purple and that your existing system is Security+ 315 MHz; model-specific wiring and programming steps should be followed as outlined by LiftMaster.