Don K Wahoo , NE September 19, 2020 Appliance: Model LFFH21F7HWA FRIDIGAIRE FREEZER Intermittently the interior light would flash off and on when you opened the door. Shortly after the temperature indicated zero, but items on the selves were not frozen. We removed the front display, replaced the control board, installed the display and it fired right up. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes