Experiencing issues with your Samsung 55-inch curved 4K Ultra HD Smart LED TV? Replace the main PCB assembly (BN94-12540B) to restore your TV's performance. If your television is turning on and off unexpectedly, experiencing display problems, or not responding to inputs, the main PCB may be faulty. This genuine Samsung part is designed for your TV's specific model, ensuring a precise fit and reliable performance. Confirm your TV's model number for compatibility before purchasing.