Samsungs never have discretes for their players that I have found. I have tried all available codes using the same protocol and device number but it has been a while. I use play to turn the unit on and a macro to turn it off (play-power or exit-play-power or exit-stop-play-power or others depending on the model). I did find some interesting hidden commands that were useful for macros but non better than play. You also may have to adjust power settings for the unit to get play to respond from an off state.