If I was local to you I'd be happy to assist. That being said, how are you sending the IR codes to the DVR? Are you sending IR to the DVR direct "line of sight" or is a Philips RFX6x00 extender involved or other IR system which uses IR emitters. There's always the possibility for instance that you've successfully learned the needed IR codes, but that the IR codes are not being received successfully by the DVR due to the IR emitter placement or perhaps due to flooding the IR receiver of the DVR. Of course the codes themselves may be the issue. Always a good idea as well to double check and make sure the configuration file is not in some way to blame.