Sears Craftsman 41AC175-2S Receiver Logic Board Assembly
The Sears Craftsman 41AC175-2S / LiftMaster 41AC075-2S receiver logic board assembly is a 315 MHz Security+ replacement board for select AC deluxe garage door openers with a purple learn button. This board family is commonly associated with certain chain and belt drive opener heads where the original service part calls for the 041AC075-2S style board and end panel.
This board should be matched carefully because the 41AC075-2S family may be used on opener designs with single or dual capacitor arrangements, and similar-looking 315 MHz boards can have different connector layouts or drive-type assignments. Correct board selection helps avoid remote programming issues, non-working wall controls, incorrect motor behavior, and replacement problems caused by using a board from the wrong LiftMaster or Craftsman family.
Compatible With
Commonly associated with select 315 MHz Security+ AC deluxe LiftMaster, Chamberlain, and Craftsman openers when the original parts diagram calls for 041AC075-2S / 41AC075-2S.
- Sears Craftsman 41AC175-2S applications where the board label and parts diagram match
- LiftMaster and Chamberlain AC deluxe chain drive openers manufactured 2005 to 2015 that specify 041AC075-2S
- LiftMaster and Chamberlain AC deluxe belt drive openers manufactured 2005 to 2015 that specify 041AC075-2S
- Select single-capacitor or dual-capacitor AC opener configurations when confirmed by the original board and harness layout
- 315 MHz Security+ purple learn button accessories such as 371LM remotes and 377LM keypads where supported
- Not compatible with yellow learn button Security+ 2.0, older 390 MHz red/orange learn button, or unrelated 041AC050 series boards unless specified by the parts diagram
Also Known As / Related Part Numbers
- 041AC075-2S
- 41AC075-2S
- 41AB075-2S
- 41AC175-2S
- Sears Craftsman 41AC175-2S
- LM-41AC075-2S
- 315 MHz purple learn button board
- 371LM compatible remote reference
- 377LM compatible keypad reference
Features & Specifications
| Manufacturer | LiftMaster / Chamberlain Group |
| Product Type | Receiver logic board with end panel |
| Sears / Craftsman Reference | 41AC175-2S |
| LiftMaster Service Part | 041AC075-2S / 41AC075-2S |
| Application | Receiver logic board replacement for select AC deluxe chain and belt drive garage door openers |
| Drive Type | AC deluxe chain and belt drive |
| Motor / Power Family | AC residential garage door opener with single or dual capacitor layouts where supported |
| Security Technology | Security+ 315 MHz |
| Radio Frequency | 315 MHz |
| Learn Button Color | Purple |
| Production Range | Select 2005 to 2015 openers |
| Compatible Accessories | 371LM remote, 377LM keypad, and compatible 315 MHz Security+ accessories |
| Notes | 41AC075-2S is related to 41AB075-2S; confirm capacitor, end panel, and board layout. |
Common Replacement Reasons
- Garage door opener has power but will not respond correctly to remotes, keypad, or wall control after other basic issues have been ruled out.
- The radio receiver section will not learn compatible remotes or drops programmed accessories after reset.
- Visible board damage, burnt components, lightning surge damage, or corrosion is found on the original board.
- The motor, safety sensor, and wall-control circuits have been checked and the parts diagram calls for this receiver logic board family.
- A previous board was replaced with the wrong frequency or wrong learn-button generation and the accessories no longer match.
Technician Note
Check the capacitor count, harness location, and end-panel style before using this board. A 315 MHz purple learn button alone is not enough to confirm fitment because several 2005-2015 LiftMaster and Craftsman board families look similar.
Before Ordering Checklist
- Match the part number printed on the original board or parts diagram, not only the opener cover model name.
- Confirm the learn button color and radio technology before ordering; purple 315 MHz Security+ boards do not replace yellow Security+ 2.0 or older red/orange 390 MHz boards.
- Check the drive type, motor type, and end-panel layout because belt, chain, screw drive, AC, and DC boards are not automatically interchangeable.
- Plan to reprogram remotes, wireless keypads, HomeLink, and MyQ/AssureLink accessories after the board is installed when applicable.
- Disconnect power before service and use a qualified garage door technician if wiring, travel setup, or force/safety testing is not familiar.
Professional Advisory
Receiver logic board replacement affects the opener controls, radio memory, travel/force setup, and safety input behavior. Do not bypass photo eyes or safety circuits to make a board work. If the opener has erratic movement, damaged wiring, or repeated board failures, have the door balance, power supply, sensor wiring, and surge exposure checked by a qualified garage door technician.
Product Questions & Answers
What is the LiftMaster cross-reference for 41AC175-2S?
The uploaded product ties the Sears Craftsman 41AC175-2S application to the LiftMaster 041AC075-2S / 41AC075-2S receiver logic board family.
Is this for chain drive or belt drive openers?
This board family is associated with select AC deluxe chain and belt drive openers, but the exact opener parts diagram must call for 041AC075-2S.
Does this work with 390 MHz remotes?
No. It is a 315 MHz Security+ purple learn button board and is not backward compatible with older 390 MHz remote systems.
Why does capacitor layout matter?
Some compatible opener heads use different single or dual capacitor layouts, and the board/harness arrangement must match the original opener design.
Will accessories need to be programmed again?
Yes. Remote controls, wireless keypads, and vehicle transmitters usually need to be relearned after replacing the receiver logic board.
