Norcold Power Board 621270001 (3-way style board) DISCONTINUED Below is a link to the replacement board made by Dinosaur Electronics: Norcold 6212XX (CLICK) This board is specifically for older style Norcold models with a serial number below 8938727: N640.3, N640.3F, N641.3, N641.3F, N641.3WH, N841.... See More