Genuine LiftMaster 045DCT125 receiver logic board — the Security+ 2.0 board (yellow learn button) for the 1-1/4 HP DC belt drive openers built from 2011 to about 2016, before Wi-Fi was on the board. The Chamberlain HD930EV is the model we see it in most; LiftMaster lists it generically for 1-1/4 HP LiftMaster and Chamberlain units of those years and cross-references it under 041D7356-5, 41D7356-5, 1D7356-5 and 001D7656-5.
The -125 matters. This is the higher-output version of the 045DCT. The two are not interchangeable: the number printed on your old board is either 045DCT or 045DCT125, and that is the one to order. The HD920EV was built with both, so check rather than assume.
Specifications
| Part number | 045DCT125 (also written 45DCT125) |
|---|---|
| Also listed as | 041D7356-5, 41D7356-5, 1D7356-5, 001D7656-5 |
| LiftMaster description | Receiver Logic Board, 1-1/4 HP |
| Learn button | Yellow — Security+ 2.0, tri-band 310 / 315 / 390 MHz |
| Connectivity | myQ via 828LM internet gateway; no built-in Wi-Fi |
| Power | 1-1/4 HP DC belt drive openers with battery backup |
| Fits | Chamberlain HD930EV; HD920EV units whose board reads 045DCT125 |
| Condition | Genuine LiftMaster OEM, new |
Which openers use the 045DCT125
| Opener | Parts page |
|---|---|
| Chamberlain HD930EV (1-1/4 HP DC belt, battery backup) | HD930EV parts |
| Chamberlain HD920EV — only where the old board reads 045DCT125; otherwise the 045DCT | HD920EV parts |
Wi-Fi 1-1/4 HP openers do not use this board. The HD950WF, WD1000WF, LW9000WF and the LiftMaster 8550W / 84602 family take the 050DCTBFMC.
Parts often replaced with it
485LM backup battery · 041-0136 safety sensors · 893LM remote · 828LM myQ gateway
Is the board actually the problem?
The logic board is the most over-ordered part on a garage door opener. Work down this list before you buy:
| Symptom | Check first |
|---|---|
| Opener completely dead — no light, no beep, nothing from the wall button | The outlet and breaker, then the line cord and the transformer. The board is last on this list, not first |
| Light comes on but the motor does nothing, or clicks once | On these DC units the motor and travel module, then the wiring between them and the board |
| Door will not close and the opener light flashes 10 times | The safety sensors — alignment, a cut wire or a sun-blinded eye. This is never the board |
| Remotes and keypad stopped working but the wall button works | Remote batteries, then re-program them to the learn button. Only if the learn button LED never lights is the receiver on the board suspect |
| Lost its Wi-Fi or myQ connection | The router, the phone app and the Wi-Fi signal in the garage — not the board. Re-run the myQ setup from the app before ordering anything |
| Runs a few inches and reverses, or stops short of the floor | Door balance and the travel and force settings first, then the travel module. The board only after those |
| Beeps every few seconds, or runs slowly on battery | The backup battery is a consumable — replace it before suspecting the board |
| Learn button LED never lights, opener runs one way only, or it failed the night of a storm | The board. Surge damage is the single most common reason one of these is replaced |
After fitting
The replacement board arrives blank. After fitting it you will need to set the travel limits and force, program every remote, keypad and vehicle HomeLink to the new learn button, and re-test the safety reversal on a 2x4 laid flat on the floor. If you used myQ through an 828LM gateway, re-add the opener in the app.
Put the opener on a surge protector when you fit the new board. Lightning and utility surges are the most common reason a garage door opener logic board is replaced, and a new board on the same unprotected outlet is at the same risk. A plug-in surge protector rated for motors is a small cost next to a second board.
Related
HD930EV parts · HD920EV parts · Chamberlain opener parts · LiftMaster logic board cross reference
Not sure which board you need? Send a photo of the number printed on your existing board to parts@gatehousesupplies.com or call 866-965-5599. We would rather confirm it than have you fit the wrong board.
