YSUS or SC board from Pansonic 50" plasma TV
TNPA5528
TXNSC1SRUJ50
Board comes from TX-P50VT50B but will fit as well other models of Panasonic plasma TVs like:
TX-P50GT50B
TX-P50GT50E
TX-P50GT50Y
TX-P50GT50J
TX-P50VT50B