No help but thanks for the reply...Here is the following transcript I got from talking to Sony(Henry)
LiveAssist Chat
Status: Analyst Henry_ is here and your issue status is: working Problem: I need to change the command mode on the receiver to AV1. The receiver and the remote are factory set to AV2 so I can get my directv tivo remote to adjust the volume and power. How?
user Chip has entered room
analyst Henry_ has entered room
Henry_> Hi Chip. Welcome to Sony Online Support. I'm Henry. Please allow me a moment to review your concern.
Chip> Thnaks
Henry_> Thanks for waiting, Chip. I'll be glad to assist you.
Chip> good
Henry_> Is the main issue, the usage of the Direct TV Remote Control to control the Receiver unit?
Chip> yes
Henry_> You require to get the code for programming the the Direct TV Remote to control a Sony Receiver, from the Direct TV.
Chip> love to, but no codes work
Chip> I have tried directv and this sony help site already tonight
Chip> do you know the code?
Henry_> In that case, it seems that the direct TV Remote does not have the circuitry to control the Sony Receiver.
Chip> no......I need to change the the command mode on the receiver to AV1
Chip> this will allow the codes to work
Chip>
http://www.remotecentral.com/cgi-bin/mboard/rc-sony/thread.cgi?4020
Henry_> Okay, I'll assist you in getting that information.
Chip> I have spent several hours trying this...Please click on the link
Chip> My model is not listed STR-DG710
Henry_> Please give me a moment while I get this information for you.
Henry_> Thanks for waiting, Chip.
Chip> still here
Henry_> Chip, there's no Command Mode setting in the Receiver to be changed to make the Direct TV Remote Compatible with the Receiver.
Chip> Did you click on the link?
Chip> well????
Henry_> Yes, I did. I'm sorry we can confirm only the information listed on the Sony official site
Chip> OK how do I change the settings to AV1?
Henry_> There's no AV1 setting in this Receiver.
Chip> Are you sure?
Henry_> Yes, I'm sure about that
Chip> It would appear that every other Receiver that Sony Makes has a AV1 setting
Henry_> Yes, there is an option to change the Command Mode in some Receiver units. That is to prevent the Remote Sensor of the Receiver from being affected from other Remote Controls.
Henry_> This Receiver does not have that option
Chip> O.K. Thanks for trying
Any other suggestions?