Vizio 3642-1232-0150 (0171-2271-3276) Main Board for E421VO

180-Day Warranty! Part Type: Main Unit, Main Board, VGA Input, HDMI Input, A/V Board, Signal Board, Tuner Board, USB Input, Digital Audio Output, Keyboard Controller Part Number: 3642-1232-0150Additional Board Numbers: 0171-2271-3276 Interchangeable Parts: 3647-0432-0150 Location: 0B3 Notice: Recommended to order by part number whenever possible. Often times there are TV models that use more than one set of parts and/or panels. Part number can be found on a sticker.Compatible TV Models: Vizio E421VO LAQKIFDN E421VO LAUKIFDL Please contact us if you have any questions!