Partial part number (2040D) can be found on the stamp on the board
LF320EM4 DS1 LF320EM4F DS1
LED40C45RQ
Partial part number (40505303) can be found on a sticker
LJ94-02826J
Samsung LJ94-02869C T-Con Board for LN40B750U1FXZA 37" Partial part number (2040D) can180 Day Warranty! Part Type: T Con Board, LCD Controller, Control Board, CTRL Board, Timing Control Part Number: LJ94 02869C Location: 01N4 Additional Board Numbers: 2009_240Hz_FRCQ_V1. 2 Interchangeable Parts: LJ94 02671F, LJ94 02772F, LJ94 02826K, BN81 02356A, LJ94 02671H, BN81 02361A, LJ94 02992F, LJ94 02869B, BN81 03157A, LJ94 02772E, LJ94 02869A, LJ94 02826J, LJ94 02808J, BN81 02444A, LJ94 02826H, LJ94 02826G Notice: Recommended to order by part