I have a Denon avr 2801 receiver. Programed the remote with the code and it was fine for the basic functions. Used Hifi-remote.com for the learning codes and they went in fine for all the other functions,(dsp modes,on screen programing,surrond parameters etc.)Toshiba 1600 DVD was next. The 15-1994 took the device code fine for basic functions. Used the "learn"codes to punch in the rest which were also going in.Was about 6 functions away from having the entire DVD remote in the 15-1994 and it stoped learning. Tried to get it to learn any function in any device mode, it would not. Used AUX 1 for receiver AUX 2 for DVD. Loved remote up to this point! Any help would be greatly appreciated.