Vizio Main Board – OEM Replacement. ? IMPORTANT – MATCH PART NUMBERS. Do NOT rely on TV model alone. Pulled from a working TV with a cracked screen. Fully functional and ready for installation. Main board controls video processing, inputs (HDMI, AV), and overall TV operation. ? What’s Included. 1x Main Board (as pictured). Please review all photos carefully. What you see is exactly what you will receive.