Sears Craftsman 41A5021-2G Receiver Logic Control Board for Garage Door Openers. Garage Door Openers Replacement Parts. Switching your Logic Board requires unplugging the operator wires from your broken control board and plugging the wires of your replacement circuit board. Some cases require to use old logic board's housing kit for your new circuit board to fit in. This circuit board works with Sears Craftsman models including.Security + Frequency 390 MHz. Board Housing may not fit in your operator due to the fact that is different or your operator is to old. In this case follow these instructions. Remove the screws that ties the new board to the housing. Swap the board from the new housing. Replace it in your old housing. Put the board back in his place on the operator. We always ensure board compatibility. You will receive a perfectly and compatible replacement board that will fit your operator. THIS IS AN OEM LIFTMASTER PART THAT IS A REPLACEMENT PART FOR THE SEARS CRAFTSMAN GARAGE DOOR OPENERS. The item "Sears Craftsman 41A5021-2G Receiver Logic Control Board for Garage Door Openers" is in sale since Saturday, August 29, 2015. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Garage Doors & Openers\Opener Parts". The seller is "gate_openers_unlimited" and is located in Miami, Florida. This item can be shipped to United States, Canada.