LiftMaster 050DCTBFLKMC Bluetooth Lock Capable Logic Board
The LiftMaster 050DCTBFLKMC is a Bluetooth enabled receiver logic board replacement kit for select LiftMaster and Chamberlain residential garage door openers. The receiver logic board is the main low-voltage control and radio receiver section of the opener. It handles remote control communication, wall control signals, myQ communication, accessory inputs, travel/force programming, and the control signals that tell the opener when to run.
This version is built for lock-capable DC belt drive and chain drive opener platforms with enhanced myQ technology and a yellow learn button. It is commonly used on modern LiftMaster smart opener families where integrated Bluetooth, Wi-Fi/myQ features, and Security+ 2.0 style radio technology are part of the opener design. It should not be selected by learn button color alone. The original board part number, opener model number, motor platform, connector layout, and lock-capable configuration all need to match.
Typical replacement reasons include a failed radio receiver, remotes that no longer program, intermittent logic board operation, communication problems after confirmed power/surge issues, or a board that is visibly damaged. Before replacing the board, check power, wall control wiring, safety sensor wiring, and any connected accessories. A board failure can look similar to a wiring short, bad wall station, damaged safety sensor wire, or surge damage elsewhere in the opener.
Compatible With
May be used with select LiftMaster and Chamberlain lock-capable DC garage door openers when the model and parts diagram call for this receiver logic board family. Commonly associated applications include:
- Select LiftMaster and Chamberlain DC belt drive garage door openers
- Select LiftMaster and Chamberlain DC chain drive garage door openers
- Enhanced myQ technology opener platforms
- Integrated Bluetooth opener platforms
- Yellow learn button Security+ 2.0 style systems
- Lock-capable openers using compatible automatic garage door lock circuitry
- Model families commonly searched with 84501, 84602, 84505R, 85503-267, 87504-267, 87802, and related modern LiftMaster/Chamberlain Wi-Fi DC openers
Compatibility depends on the exact opener model, board number, manufacturing generation, and lock-capable configuration. Similar 050DCT boards are not always interchangeable.
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
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| Product Type | Receiver logic board replacement kit |
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| Part Number | 050DCTBFLKMC |
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| Application | Select smart residential garage door openers |
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| Compatible Operator Type | DC belt drive and DC chain drive garage door openers |
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| Security Technology | Security+ 2.0 style yellow learn button platform |
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| Connectivity | Bluetooth enabled, myQ/Wi-Fi opener platform support when matched to the opener |
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| Lock Capability | For select lock-capable opener configurations |
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| Notes | Match original board number, opener model, connector layout, and parts diagram before ordering |
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Also Known As / Related Part Numbers
- 050DCTBFLKMC
- 050DCTBLKMC
- 050DCTBLK
- 050DCTWFLK
- 050DCTBFLK
- 050DCTB - related Bluetooth receiver logic board family; not always a direct substitute
- 050DCTBMC - related Bluetooth receiver logic board family; verify model-specific fitment
- 050DCTBFMC - related non-lock or different generation board family; verify before substituting
Technician Note
Do not replace this board only because the opener has a yellow learn button. LiftMaster used several similar 050DCT board families. Match the full part number printed on the original board and confirm whether the opener is lock capable.
Before Ordering
- Read the opener model number from the motor head label.
- Compare the original receiver logic board part number to 050DCTBFLKMC, 050DCTBLKMC, 050DCTBLK, or 050DCTWFLK references.
- Confirm the opener is a compatible DC belt drive or chain drive smart opener.
- Confirm the opener uses the lock-capable board configuration when an automatic garage door lock is present.
- Inspect low-voltage wiring and safety sensor wiring for shorts before blaming the board.
Professional Advisory
Disconnect power before servicing the opener. Logic board replacement may require reprogramming remotes, keypads, myQ setup, travel limits, and force settings. If there is burn damage, repeated board failure, or unsafe door movement, have the system inspected by a qualified garage door technician.
Product Questions & Answers
What type of opener uses the LiftMaster 050DCTBFLKMC logic board?
The 050DCTBFLKMC board is for select LiftMaster and Chamberlain lock-capable DC belt drive and chain drive garage door openers with enhanced myQ technology, integrated Bluetooth, and a yellow learn button.
Which model families are commonly associated with this board?
It is commonly associated with select modern LiftMaster smart opener models such as 84501, 84602, 85503-267, 87504-267, 87802, and related Chamberlain/LiftMaster DC smart opener families when the parts diagram calls for this board.
Is 050DCTBFLKMC related to 050DCTWFLK or 050DCTBLK?
Yes. 050DCTBFLKMC is commonly searched with 050DCTWFLK, 050DCTBLK, and 050DCTBLKMC. These numbers are related to Bluetooth enabled lock-capable receiver logic board applications, but the exact board must be matched to the opener model and original board number.
Will this board work with all yellow learn button openers?
No. Yellow learn button color is only one clue. The opener must also match the correct DC motor platform, myQ/Bluetooth generation, lock-capable configuration, and board connector layout.
What has to be set up after replacing this logic board?
Remotes, wireless keypads, myQ setup, travel limits, force settings, and accessories may need to be reprogrammed after installation. Follow the opener manual and keep monitored safety devices connected.
