Partial part number (4076A) can be found stamped on the board.
LG 6871L-4076A (6870C-0532B) T-Con Board for 55SE3KB-BE 55SM5KB-BD 55LS5B-BE
Part Number: 6871L-4076A
Board Number: 6870C-0532B
Part Type: T-Con
Known Models
55LS5B-BE AUSSLJM
55SE3B-BE AUSSLJM
55SE3KB-BE AUSSLJM
55SL5B-BE AUSSLJM
55SM3C-B
55SM5B-B AUSSLJM
55SM5KB-BD AUSSLJM
55SM5KE-BJ AUSSLJM
43SE3KE-B
55SM5KD-B