The LiftMaster 050DCTBLK Logic Board is an OEM replacement control board for select LiftMaster myQ-enabled residential garage door openers. As the opener’s primary electronics module, it governs motor operation, safety reversing sensors, wall controls, remote controls, and myQ connectivity. This version incorporates onboard Bluetooth for faster setup and accessory pairing through the myQ app, and supports the built-in Lock feature that disables remote access when engaged at the wall control. Use this replacement part only where 050DCTBLK is specified by the opener’s parts list or matches the part number printed on the original board, ensuring proper compatibility with your LiftMaster belt- or chain-drive system and its Security+ 2.0 accessories.
Installation requires disconnecting power to the opener, transferring all terminal connections for the wall control and photo‑eye sensors to the same positions on the new logic board, and then completing setup procedures such as reprogramming travel limits and force, re-pairing remote controls and wireless keypads, and reconnecting myQ/Bluetooth. For safety and compliance, do not operate the door without properly aligned safety sensors, and avoid electrostatic discharge when handling the board. This replacement logic board is intended for residential sectional garage door applications and is not a universal control—verify model-specific compatibility before ordering or installing.