Experiencing power issues with your 55-inch 4K Ultra HD Smart QLED HDR TV? The genuine Samsung power supply board (BN44-00949E) might be the solution. This component is vital for maintaining consistent power flow in your television, particularly the QN55Q8FNBFXZA model. If your TV is not powering on or has intermittent power failures, replacing this board could solve the problem. Double-check your TV's model number for compatibility before purchasing.