If your 75-inch Q70R QLED TV is experiencing issues such as no picture, distorted display, or unresponsive controls, the main board assembly might be the cause. This genuine Samsung main board, BN94-14054C, is meant to replace faulty boards in your Samsung TV. Its compatibility spans across various models, ensuring you get the right fit and function. Double-check your device's model number to make sure this part is right for your TV before purchasing.