I have done many DTV SD boxes before, silver with blue light. I have always used the H10 or D10 codes. I have a brand spanking new SD box that will not respond to the discreet codes. I got so frustrated that I did not even check the model number before leaving for the day. In retrospect, it got the best of me, one of those days. So I am checking model numbers now and I found some of my 06 CEDIA DTV cutsheets. The SD DVR is model number R15. Does any one know if the SD non-DVR is R10? I saw those codes but did not try them. In my infinite wisdom I thought they were the old school codes. Thanks for any help.