LiftMaster 41B0773-1 Telephone Entry System Replacement Board
The LiftMaster 41B0773-1 is a service replacement board for select LiftMaster telephone entry and access control systems. This part is used inside the entry system cabinet to restore the specific board function identified by the original part number and system parts diagram. Because EL-series telephone entry systems use multiple circuit boards, this part should be ordered by the original board label, board function, connector arrangement, and system model rather than by appearance alone.
This board is most commonly associated with LiftMaster EL25 and EL2000 telephone entry systems. In the field, these systems may be used at residential communities, gated properties, commercial entrances, shared access points, and controlled vehicle entry locations. Replacement may be considered when the board has failed due to age, surge damage, corrosion, water intrusion, keypad/display communication faults, input/output problems, relay trouble, or visible board damage, depending on which board is being replaced. This LED board is used for display/indicator related repair in compatible telephone entry systems and should not be confused with the main control, input, or output board.
Compatible With
The 41B0773-1 board is commonly associated with the following LiftMaster telephone entry systems and board families. Compatibility should be confirmed by the original board number and parts diagram.
Common Compatible Products and Systems
- Select LiftMaster telephone entry systems
- LiftMaster EL2000 telephone entry applications when the parts diagram calls for 41B0773-1
- LiftMaster EL25 / EL2000 style service-board family when confirmed by diagram
Related Telephone Entry Board Family
- 41B0735 main processor/control board for EL25 and EL2000 systems
- 41B0736 / 2B736 input board for EL25 and EL2000 systems
- 41B0737 / 2B737 output board for EL25 and EL2000 systems
- 41B0773-1 / 41B773-1 LED replacement board for telephone entry systems
- LiftMaster EL25 telephone entry system service boards
- LiftMaster EL2000 telephone entry system service boards
- LiftMaster EL2000SS telephone entry system service-board applications where parts diagrams match
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | LED Replacement Board |
| Part Number | 41B0773-1 |
| Application | Replacement circuit board for select LiftMaster telephone entry systems |
| Compatible Systems | Select LiftMaster telephone entry systems, LiftMaster EL2000 telephone entry applications when the parts diagram calls for 41B0773-1, LiftMaster EL25 / EL2000 style service-board family when confirmed by diagram |
| Related Board Family | 41B0735, 41B0736, 41B0737, 41B0773-1 |
| Notes | Match the original board label, connector layout, ribbon cables, and telephone entry model before ordering. |
Also Known As / Related Part Numbers
- 41B0773-1
- 041B0773-1
- 41B773-1
- 2B773-1
- LiftMaster LED board
- Telephone entry LED board
- EL2000 LED board
Technician Note
Telephone entry circuit boards are sensitive to voltage problems, surge damage, corrosion, and incorrect wiring. Photograph the original board wiring and connector positions before removal. If the old board shows burned traces, water damage, or repeated surge failure, inspect the enclosure, power supply, grounding, phone-line protection, and accessory wiring before installing the replacement board.
Before Ordering, Confirm
- The telephone entry system is a compatible LiftMaster EL-series unit.
- The original board number matches this part or a confirmed related number.
- The connector layout, ribbon cables, relay/output wiring, and mounting points match the original board.
- The failure is isolated to this board and not another board, power supply, transformer, display/keypad, phone line, or external device.
- The enclosure is dry and free of corrosion before installing new electronics.
Professional Advisory
This is an electronic access-control part. Disconnect power before servicing, avoid shorting terminals, and do not bypass access-control or gate safety circuits to test the system. If the telephone entry system controls a gate operator, verify safe gate operation and access-control behavior after service.
Questions & Answers
What is the LiftMaster 41B0773-1 used for?
The LiftMaster 41B0773-1 is a replacement led replacement board used in compatible LiftMaster telephone entry and access control systems, especially EL25 and EL2000 style systems where the parts diagram calls for this board.
Is this board used in EL25 and EL2000 systems?
Yes. This board family is commonly associated with LiftMaster EL25 and EL2000 telephone entry systems, but the exact board position and part number should be matched to the system parts diagram.
Can this repair a dead telephone entry system?
It may help when the failed function is on this specific board, but power supply, wiring, keypad/display boards, relays, surge damage, and phone-line issues can create similar symptoms.
Does this board require programming after replacement?
Some telephone entry boards may require setup, wiring confirmation, or system testing after replacement. Keep the original wiring layout documented before removing the old board.
What should be checked before replacing this board?
Check the model number, original board label, connector locations, ribbon cables, wiring, power input, and any visible surge or water damage before installing the replacement board.
