These boards have been removed from mostly new TVS with broken screens and should work if properly installed. SAMSUNG UN19F4000AF TV BUTTON AND IR BOARD BN96-26774B / BN41-01979B. Please verify that your board part number is the same as BN96-26774B / BN41-01979B. 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)