Part Type Signal Board AU Board Main Unit Main Board A/V Board USB Input S Video Input Part Number A-1231-638-B Part Usage LCD MFR Part Number 1 Sony A-1231-638-B MFR Part Number 2 Sony A-1433-191-A Board Number(s) 1-873-856-12 Substitute Parts A-1231-638-A Known Models SONY KDL-40WL135 SONY KDL-46VL130 SONY KDL-52S5100 SONY KDL-52W3000 SONY KDL-52WL130 Panel Sticker Number LTY400HA01 LTY400HC01 LTY460HB01 LTY460HT-LH1 Panel Manufacturer Sony