Vizio V756-J03 Main Board Y8389608B, 1P-0209X00-4010. Part Type: Main Board. Part Number: Y8389608B, 1P-0209X00-4010. Important Notes:The part number is found on a sticker on the front of the board. Genuine Vizio Main Board Y8389608B, 1P-0209X00-4010. Check out my other items.