The LiftMaster 050DCRJWF is the genuine replacement logic board for select LiftMaster 8500W wall-mount (jackshaft) garage door openers. It restores full operator functionality by managing the DC motor drive and integrated wireless features, including built-in MyQ Wi‑Fi for smartphone control and a Security+ 2.0 encrypted receiver for remotes and keypads. Designed to work with the 8500W’s Automatic Garage Door Lock (model 841LM), this board preserves the opener’s secure deadbolt capability and is intended for residential sectional door applications where the opener mounts beside the torsion bar. It is commonly identified by a yellow Learn button associated with Security+ 2.0 accessories.
Compatibility is specific: the 050DCRJWF is used with the LiftMaster 8500W series and is not backward compatible with older non‑Wi‑Fi jackshaft models such as the 8500 (non‑W) or 3800. After installation, power must be disconnected and all harnesses transferred carefully to avoid static damage; the opener then requires a full setup sequence per the LiftMaster manual, including resetting travel and force, reprogramming Security+ 2.0 remotes/keypads, and re-linking to MyQ over a 2.4 GHz Wi‑Fi network. Ensure safety sensors are correctly wired and aligned and verify operation of the 841LM deadbolt if present. For buyers searching a LiftMaster replacement circuit board or logic board upgrade for the 8500W with MyQ, Wi‑Fi, Auto Lock, and Security+ 2.0, the 050DCRJWF is the OEM part that maintains original performance and feature set.