This main processor board BN94-06437Y (BN97-07019Q) is designed for use with Samsung 50 inch TV model UN50F6400AFXZA. It is an essential component that enables the TV to function properly.
It is not working correctly.
It is working with quirks: in 2D mode, top half of the screen is darker (OK after switching 2D->3D, but picture is still 2D). In 3D mode, 3D video is flickering.