Sorry!!

I have a Scientific Atlanta Cable Box (Explorer 3250) and and Audiovox LCD TV (FPE1506). I cannot find a code for the cable box's universal remote. The remote is a (URC 7820B00-SA 09711) from the Cable company other numbers that appear on the remote are (Z061064 A 002363 LF) and the Cable companys lists it as an (M7820) DVR Universal remote. I have tried the codes that the user manual suggests (0451, 0180, 0623 and, 0092) all of which do not work and have tried a manual search for the code on the remote with no luck. I was hoping someone with a bit more knowledge on the subject maight have any suggestions or other codes I could try to get this to work with the TV. Thanks!!