LiftMaster 41A4252-7G Receiver Logic Board Assembly

The LiftMaster 41A4252-7G Receiver Logic Board Assembly is a genuine replacement control board designed to restore radio reception and core operating functions on select LiftMaster and Chamberlain chain‑drive garage door openers that use the Security+ system with an orange Learn button. This assembly houses the opener’s radio receiver and control logic, enabling reliable operation of compatible remotes, keyless entry pads, wall controls, and safety reversing sensors. It is commonly installed when an opener loses remote range, fails to respond to transmitters, or exhibits intermittent logic faults, providing a direct, plug‑in replacement to bring the unit back to dependable service in residential applications.

This board includes a built‑in Security+ rolling‑code receiver typically paired with 390 MHz remotes such as LiftMaster 971LM/973LM and compatible keypads like 977LM. Installation requires disconnecting power, transferring the harnesses and terminal leads to the new board, securing the board in place, and then restoring power. After replacement, you must reprogram all remote controls and wireless keypads by pressing the opener’s Learn button and then activating each transmitter; any prior codes are not retained. For safety and proper operation, ensure the photoelectric safety sensors are connected and aligned before testing. This 41A4252-7G assembly is intended for Security+ openers with the orange Learn button and is not interchangeable with later purple or yellow Learn button models that use different radio platforms.