The main control board had two fried capacitors and two fried resistors. This was the third replacement of the main board in 10 years. The failed resistors both potentially relate to the two fans (compressor fan and evaporator fan). A failure of all three components was indicated. I replaced the board and the two fans to ensure that the fans did not cause the new board to fry upon power-up. The refrigerator is working again. It took all of 20 minutes to diagnose and replace the main control board.