Part number can be found on the board.
Sharp RUNTKB118WJQZ (DPS-254BP-1) Power Supply / LED Board
Part Number: RUNTKB118WJQZ
Board Number: DPS-254BP-1 / DPS-254BP-1A / 2950322003
Part Type: LIPS
Manufacturer Part Number 1: Sharp RUNTKB118WJQZ
Known Models
LC-70C7500U
LC-70LE750U
LC-70LE755U
LC-70LE757U
LC-70LE857U
LC-70UQ17U