Sears Craftsman 139.30437 Receiver Logic Circuit Board is a replacement receiver logic board used in the 45DCT / 045DCT service-board family. The logic board is the control center of the garage door opener. It receives commands from remotes, keypads, wall controls, and safety inputs, then controls the motor logic and stored programming for the opener. When the original board fails, the opener may stop responding to transmitters, lose remote memory, show diagnostic LED issues, click without running, or operate intermittently after a power surge.
This page is written for the Sears Craftsman 139.30437 application and related LiftMaster, Chamberlain, and Sears Craftsman board references in the same drive type, radio technology, learn-button color, and production range. Logic boards are highly specific parts. A board that looks close can still be wrong if the frequency, drive type, end panel, or harness layout does not match.
This board family is commonly used with Select LiftMaster, Chamberlain, and Sears Craftsman DC chain drive and DC belt drive garage door openers. It is tied to Security+ 2.0 tri-band radio platform and Yellow learn button on matching openers. It should not be used in older purple, red/orange, or green learn button openers. Use the model list below as researched guidance, then verify the original board label and opener parts diagram before ordering.
Used with yellow learn button Security+ 2.0 accessories such as compatible 891LM, 893LM, 877LM, 877MAX, 890MAX, and 893MAX style remote/keypad families when the opener supports them. Remote controls, wireless keypads, and vehicle buttons normally need to be programmed again after the board is replaced because the receiver memory is stored on the board.
| Feature / Specification | Details |
|---|---|
| Manufacturer | Liftmaster |
| Product Type | Security+ 2.0 receiver logic board |
| Listed Part Number | 45DCT |
| Primary Board Family | 45DCT / 045DCT |
| Application | Select LiftMaster, Chamberlain, and Sears Craftsman DC chain drive and DC belt drive garage door openers |
| Compatible Operator Type | DC chain drive and DC belt drive |
| Radio / Security Technology | Security+ 2.0 tri-band radio platform |
| Learn Button Color | Yellow learn button on matching openers |
| Production Range | Manufactured after 2011 on matching applications |
| Common Accessory Family | Used with yellow learn button Security+ 2.0 accessories such as compatible 891LM, 893LM, 877LM, 877MAX, 890MAX, and 893MAX style remote/keypad families when the opener supports them. |
| Notes | Board housing and end panel details can vary by opener model. Match the original board number and parts diagram before ordering. |
This is an internal electrical control component. Disconnect power before service and do not bypass photo eyes, wall controls, door locks, or any monitored safety device to force operation. If the opener has high-voltage damage, burned wiring, a stuck relay, water damage, missing safety sensors, or unsafe door movement, have a qualified garage door technician diagnose the system before replacing the board.
This listing is written for Sears Craftsman 139.30437 when the original opener uses the matching 45DCT / 045DCT board family. Match the original board number, opener model, learn button color, and parts diagram before ordering.
45DCT is associated with DC chain drive and DC belt drive applications. It should be matched by drive type and board family, not by case shape alone.
This board family uses Security+ 2.0 tri-band radio platform and is tied to Yellow learn button on matching openers. Accessories normally need to match the same radio/security generation.
Related and also-known-as numbers for this board family include: 045DCT, 45DCT, 45DCBR1A, 041D7356, 1D7356, 41DCBC1A, 41DCBC3A, 41DCCC2A, 41DCBC5A, 45DCCL5A, 45DCCL3A, 45DCCL1A, 45DCCR5A, 41D7356, 45DCCR3A, 45DCCR1A, 001D7356, 41DCCC1A, 41DCCC3A, 45DCJL5A, 45DCRL1A, 41DCCC5A, 45DCRL3A, 45DCJL1A, 45DCJL3A, 45DCBL5A, 45DCBL3A, 45DCBL1A, 45DCBR5A, 45DCRL, 45DCBR3A.
Usually no. Receiver memory is on the logic board, so remotes, keypads, and vehicle buttons normally need to be programmed again after the replacement board is installed and the opener is tested safely.