Partial part number (6894A or 6894B or 6894D or 6894F) can be found stamped on the board.
LG 6871L-6894A 6871L-6894B 6870C-0902A LE650PQL-HQD1 T-Con Board
Part Number: 6871L-6894A
Board Number: 6894A / LE650PQL-(HQ)(D1) / 6870C-0908A / 6871L-6894B / 6871L-6894F / 6871L-6894D / 6871L-6894C
Part Type: T-Con
Known Models
OLED65C2AUA DUSQLJR
OLED65A2AUA DUSQLJR
OLED65A2PUA DUSQLJR
OLED65C3AUA DUSQLJR