Norcold Optical Board 639509 (fits the N7V/ N8V)Fits these Norcold refrigerator models:N7V series: N7V, N7VFN8V series: N8V, N8VF This is the optical board that fits all N7 and N8 models that have a "V" after the model number, regardless of serial number. This part has been discontinued by... See More