Part Type: X-Main Board XSUS X-Sustain SS Board Part Number: TXNSS1RQTUS MFR Part Number 1: Panasonic TXNSS1RQTUS MFR Part Number 2: Panasonic TXNSS1RQTU MFR Part Number 3: Panasonic TXNSS1RVTB Board Number(s): TNPA4394 Known Models: Panasonic TH-50PX80U TH-M50HD18 TH-50PX80U TH-50PH11UK TH-50PX8B Panel Manufacturer: Panasonic