Vizio E600I-B3 Main Board (0160CAP03100) Y8386296S. >>Main Unit, Main Board, VGA Input, HDMI Input, A/V Board, Signal Board, Tuner Board, USB Input, Digital Audio Output, Ethernet Input. =”color: #3366ff;”> =”color: #3366ff;”>. 296 can be found on a sticker on the front of the board. The letter after the 296 does not matter. Check out my other items.