I have an HR21-700 DVR and a Yamaha RX-V1400 receiver. I have tried all the remote control codes in the manual , and all the ones I found in the menu on the D* DVR setup screen. None of them seem to work with this receiver. It seems to me that the D* remote control for my old R15 had a code that worked but I cannot seem to find the one for the RC64R. Does anyone else have the D* RC64R remote control that they have gotten to work with the Yamaha RX-V1400?