Part Type UB1 Board Part Number A-1257-224-B MFR Part Number 1 Sony A-1257-224-B MFR Part Number 2 Sony A-1257-223-B MFR Part Number 3 Sony A-1519-919-A Board Number(s) 1-873-860-11 172868211 Substitute Parts A-1519-919-B A-1519-919-A Known Models SONY KDL-40XBR4 SONY KDL-40XBR5 SONY KDL-46WL135 SONY KDL-46XBR4 SONY KDL-46XBR5 SONY KDL-52WL135 SONY KDL-52XBR4