Genuine LiftMaster / Elite 041B0737 output board (also 2B737) — the board that drives the gate and door relays and the audio path on the EL25, EL2000 and EL2000SS telephone entry systems. A unit that takes a valid code but never fires the relay, or that connects a call with no audio in one or both directions, is usually this board once the 041B0736 input board and the speaker have been checked.
Read the number on the board you are removing. The EL2000, EL2000SS and EL25 share most of their electronics, but each board does one job. The table below says which is which; the main board 041B0735 is discontinued, so if that is the one that has failed, call us before ordering anything else.
Specifications
| Part number | 041B0737 (also 2B737) |
|---|---|
| Fits | EL25, EL2000, EL2000SS |
| Condition | Genuine LiftMaster / Elite OEM, new |
The EL2000 / EL25 boards
| Board | Job |
|---|---|
| 041B0735 main board | Runs the unit — discontinued, no longer available |
| 041B0736 input board (2B736) | Keypad and call button inputs |
| 041B0737 output board (2B737) | this page |
| 041B0997 interconnect board (41B997) | Joins the door cables to the boards |
| 041B0989 display assembly (41B989) | Display and its board |
| 041B0773-1 LED board (41B773-1) | Lights the keypad |
| 041B0995 call button kit (41B995) | Call button and its board, EL2000 |
| 041B0731 call button board (2B731) | Call button board, EL25 |
Parts often replaced with it
041D0236 16-button keypad · 041B0990 display cables kit · 041B0994 door interconnect cables kit · SN1600341-K bypass board · 041B0012 key
Is the board actually the problem?
The EL2000 is a multi-board unit, and the wrong board gets ordered often. Work down this list before you buy:
| Symptom | Check first |
|---|---|
| Unit dead, no display | The transformer and the fuse first; then the main board — which is no longer available, so call us before ordering anything |
| Keys unresponsive or intermittent | The keypad and its ribbon, then the input board |
| Valid code entered, gate relay never fires | The input board, then the output board |
| No audio, or the visitor cannot be heard | The output board and the speaker / microphone |
| Call button does nothing | The call button and the interconnect cables and board |
| Display dark, unit otherwise works | The display cables kit, then the display assembly |
| Keypad not lit | The LED board |
| Unit unresponsive, boards look healthy | The bypass board (SN1600341-K) |
After fitting
Re-test the keypad, the call button, both audio directions and the gate relay before closing the door of the unit.
Related
EL25 parts · EL2000 parts · EL2000SS parts
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.
![Liftmaster Interconnect Board [041B0997]](https://cdn11.bigcommerce.com/s-32eq2wsbti/images/stencil/500x659/products/11537/226482/liftmaster-interconnect-board-041b0997-41b997__08978.1721406092.jpg?c=2 "Liftmaster Interconnect Board [041B0997]")
