If your Samsung 55-inch LED Smart 4K UHD TV is experiencing picture or connectivity issues, the main board may be the culprit. This genuine Samsung assembly PCB main board (BN94-12871C) is designed for your television, specifically compatible with model version FA01. Replacing a faulty main board can resolve issues such as no signal, screen display problems, or audio disturbances. Always verify your TV's model number for compatibility before purchasing.