Experiencing issues with your Samsung television's display or functionality could indicate a problem with the main board. The genuine Samsung main board (BN94-18147D) is an OEM replacement part designed for the QN65S90CAFXZA model, ensuring compatibility and quality. A failing main board might cause your TV to not power on, display errors, or have connectivity issues. This part is specifically crafted for LED, 65-inch models, keeping your device's performance in check. Before buying, verify your television's model number to confirm compatibility.