I am using the Radio Shack 15-1994 Remote. I have all Sony equipment (TV, 2 VCRs, DVD, DB930 Receiver, 2 DirecTV receivers). The two DirecTV receivers are the A3 and A4. The code to turn off all Sony equipment is 621. This works for all the equipment except for the A4. I really need the code to turn this SAT receiver OFF (not the PowerON/PowerOFF code). Does anyone know how to do this?

Thanks.