Partial part number (63071904) can be found on a sticker.
LG EAY63071904 Power Supply / LED Board
Part Number: EAY63071904
Board Number: LGP3942-14PL1 / EAX65423701(2.0)
Part Type: LIPS
Manufacturer Part Number 1: LG EAY63071904
Known Models
39LY560H-UA
42LB5600-UZ BUSDLJM,BUSDLJR,BUSWLJR,BUSWLQR
42LY560H-UA
42LY570H-UA