I mean did you have Samsung send you a new remote? It may have died.
My Samsung remote control for curve tv was working excellently to control Yamaha receiver.
All of a sudden its not working to control the AUDIO of the Yamaha receiver, I can still operate the power off/on.. set top box (cable) channel selection etc..
Tried re-setup of universal settings but AUDIO control to control volume is not working so right now I have to use the yamaha receivers remote control for volume.