I have a Sony RDR-HX715 DVD/DVR. I also have Directv. I had an RCD H10 HD Satellite receiver and was able to use the Top Box Controller feature (changes the satellite station when programming the DVD/DVR to record a program). I had a new Directv brand H20 -600 model receiver installed yesterday. The 15 Directv codes listed in the Sony manual do not work. In fact I tried ALL the satellite codes. Does anyone have a code specific to my problem or know of any database of codes?