It almost sounds as if a button is stuck. You might try "massaging" each button to see if this issue stops as a result.
Remotes are available at Samsungparts.com, and the one for your specific unit, if I'm not mistaken, is here:
If you have any questions, you can also reach our parts department at 800-627-4368.
Does that help?
The remote that came with my LED TV (UN40B6000) has stopped working after 6 months. The only apparent effect it now has is to cause the indicator light at the base of the TV to blink rapidly. This occurs continuously whenever the remote is pointed at the TV, even if the remote is not being held. I have replaced the batteries, with the same result. I looked for another reset option on the remote, but could not find any.
The good news is that (1) the remote for the Samsung BD player can control the TV and (2) it seems a replacement remote should be inexpensive and readily available.