Good Morning!
This particular unit doesn't have a universal remote control set up. More than likely you are able to control your cable box using the CEC Anynet + feature. With this feature you are able to control the device, but you may not have full functionality.
Regards,
HD Tech
Just bought a Samsung UN28H4500 tv with remote. I can find the Guide but no button that lets me see the recordings I already have on my ATT Uverse DVR.
How do I do this? Thanx for your help.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic