The LiftMaster 045DCT125 is a receiver logic board replacement kit for select 1-1/4 HP LiftMaster and Chamberlain garage door openers. It is part of the Security+ 2.0 yellow learn button opener generation and is tied to higher-horsepower residential opener applications where the standard 045DCT board may not be the correct part.
The key fitment issue with this board is the 1-1/4 HP application. Similar-looking logic boards can share the same general Security+ 2.0 technology but differ by horsepower, opener platform, harness connection, feature set, and board number. This part is commonly cross-referenced as 041D7356-5, 41D7356-5, 1D7356-5, and 001D7656-5, and some catalog references tie it to HD930EV style opener searches.
Replace this board when the original board number and parts diagram confirm it. Common symptoms can include failed remote programming, no accessory response, logic malfunction, or visible board damage after sensors, wall controls, travel module, and power have been checked. Do not choose this board only because the opener has a yellow learn button; the horsepower and original board number matter.
| Feature / Specification | Details |
|---|---|
| Manufacturer | LiftMaster / Chamberlain |
| Product Type | Receiver logic board replacement kit |
| Part Number | 045DCT125 |
| Primary Board Reference | 041D7356-5 |
| Application | Security+ 2.0 receiver logic board for select 1-1/4 HP openers |
| Supported Motor Rating | 1-1/4 HP applications when confirmed by model |
| Security Technology | Security+ 2.0 |
| Learn Button Color | Yellow |
| Compatible Operator Type | Select residential garage door openers manufactured after 2011 |
| Notes | Match horsepower, board number, model, and parts diagram |
The 1-1/4 HP board family should be kept separate from standard 045DCT and 047DCT boards. Always compare the old board label and connector layout before shipping or installing.
Logic board replacement should be performed with power disconnected. If the board failed due to surge, water, or overheated wiring, correct the cause before installing another board.
It is intended for select 1-1/4 HP LiftMaster and Chamberlain opener applications, unlike standard 045DCT boards used on other models.
Related numbers include 041D7356-5, 41D7356-5, 45DCT125, 1D7356-5, and 001D7656-5.
No. Yellow learn button is only one clue. Horsepower, model number, original board number, and parts diagram must match.
Yes. Remotes, keypads, and travel/force settings generally need to be set up after board replacement.
Not automatically. Use 045DCT125 only when the original opener calls for this 1-1/4 HP board family.