When your Samsung display shows signs of power issues, the power supply LED board (BN44-00953B) might be the part you need. It's a genuine Samsung part for use in 49-inch, 50-inch, and 55-inch QMR-E series 4K UHD displays, as well as other models. Power issues can manifest as the display not turning on or shutting down unexpectedly. This board is designed to maintain the electrical power your display needs to function properly. Before purchasing, verify your device's model number for compatibility.