Experiencing issues with your Samsung 78-inch 9-Series SUHD Smart TV's power supply? The DC VSS power board (BN44-00820A) may be the culprit. Over time, power boards can wear out, leading to flickering screens, inconsistent power, or complete power failure. Replacing this board could solve those issues and restore your TV's functionality. Always double-check your TV's model number before purchasing to confirm this part is compatible.