The Samsung BN94-14158A PCB Main Board Assembly is an original replacement part for your Samsung TV. If your television is experiencing issues like failure to power on, unexpected shutdowns, or display problems, the main board may be the culprit. This component has been tested and is in good working condition, ready to restore functionality to your device. Always check your device's model number, such as QN55Q80RAFXZA, for compatibility before purchasing.