These boards have been removed from mostly new TVS with broken screens and should work if properly installed. SAMSUNG UN40N5200AFXZA TV WIFI MODULE BN59-01174D / WIDT30Q. Please verify that your board part number is the same as BN59-01174D / WIDT30Q. The part number is the first number left of the /, or the sole number listed. Most often written in title as (part number / board number)