LiftMaster 045DCT125 Receiver Logic Board for 1-1/4 HP Openers
The LiftMaster 045DCT125 is a Security+ 2.0 receiver logic board replacement kit used with select 1-1/4 HP LiftMaster and Chamberlain garage door openers manufactured after 2011.
This board controls receiver functions, accessory programming, and main control logic on compatible yellow learn button openers. It is often replaced when the opener will not program remotes, has receiver problems, or has board-related control issues after sensors, wiring, and accessories have been checked.
Compatible With
The 045DCT125 is for select 1-1/4 HP LiftMaster and Chamberlain openers, including HD930EV and WD850KEVG style applications when confirmed by parts diagram. It should not be treated as a universal logic board.
- Select 1-1/4 HP LiftMaster garage door openers after 2011
- Select 1-1/4 HP Chamberlain garage door openers after 2011
- Commonly associated with HD930EV when confirmed
- Commonly associated with WD850KEVG when confirmed
- Security+ 2.0 yellow learn button systems using the correct board number
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster / Chamberlain |
| Product Type | Receiver Logic Board Kit |
| Part Number | 045DCT125 |
| Related Numbers | 041D7356-5, 41D7356-5, 45DCT125, 1D7356-5, 001D7656-5 |
| Application | Select 1-1/4 HP garage door openers |
| Security Technology | Security+ 2.0 yellow learn button |
| Production Range | Manufactured after 2011 on compatible units |
| Notes | Match horsepower class, board number, and connector layout |
Also Known As / Related Part Numbers
- 045DCT125
- 45DCT125
- 041D7356-5
- 41D7356-5
- 1D7356-5
- 001D7656-5
- HD930EV logic board
- WD850KEVG logic board
Technician Note
A yellow learn button alone does not confirm this board. The 045DCT125 is tied to select 1-1/4 HP units and is different from other Security+ 2.0 boards.
Before Ordering, Confirm
- The opener is a compatible 1-1/4 HP LiftMaster or Chamberlain model
- The original board number matches 045DCT125 or a confirmed related number
- The unit was manufactured after 2011
- The connector layout and end panel label match
- Safety sensors, wall control, power, and accessories have been checked
Professional Advisory
This is an electronic control board. Disconnect power before service and test travel, force, safety sensors, and reversal after replacement. Use a qualified technician for electrical damage or unsafe door operation.
Important Ordering Warnings
- Not the same as 045DCT or 47DCT
- Not for every yellow learn button opener
- Not for all Wi-Fi or myQ models
- Incorrect board selection can prevent programming or operation
Questions & Answers
Which openers use the 045DCT125 board?
It is used on select 1-1/4 HP LiftMaster and Chamberlain Security+ 2.0 openers, including HD930EV and WD850KEVG style applications when confirmed by parts diagram.
Is 045DCT125 the same as 045DCT?
No. They are related Security+ 2.0 logic board families, but 045DCT125 is for select 1-1/4 HP applications and should be matched by board number.
Does this board have a yellow learn button?
Compatible systems use Security+ 2.0 yellow learn button technology, but learn button color alone is not enough to confirm fitment.
Will remotes need programming after replacement?
Yes. Remotes, keypads, and wireless accessories usually need to be programmed to the replacement board.
What symptoms can point to a bad board?
Remote programming failure, receiver problems, no response, light/control issues, or intermittent operation can point to a board problem, but wiring, sensors, and power should be checked first.
