Part Type: X-Main Board XSUS X-Sustain SS Board Part Number: TXNSS1ECUU MFR Part Number 1: Panasonic TXNSS1ECUU Board Number(s): TNPA4783 Known Models: PANASONIC TC-P54S1 TC-54PS14 TC-P54G10 Panel Sticker Number: MC137F21T12 Panel Manufacturer: Panasonic