I might suggest exchanging the unit for another. It seems to me that the IR input isn't working on your television.
Keep me posted.
I recently bought the TV but unfortunately i can't use the remote control(BN5900687A) after 1 day. I replaced them with a new batteries and problem still persist. I tried to unplug the TV for 30 minutes and tried again but it's the same thing. After that, i went to the shop where i bought the TV and they've tested my remote to other samsung tv's and it's working fine. What seems to be the problem? Is there a problem with the TV's IR?