Chamberlain Liftmaster 41A5507-3 Garage Door Receiver Logic Board Red LearnChamberlain Liftmaster 41A5507 3 Garage Door Receiver Logic Board Red Learn This circuit board is a revised version of the logic board for the LiftMaster 2500B (390 MHz) garage door opener. This circuit board comes with the end panel and replaces the following circuit boards: 41A5507 3B 41A5507 6 41A5507 6C Sears Craftsman 41A5507 5 Sears Craftsman 41A5507 5B If your current circuit board has any of the part numbers listed above, you can replace it