I recently purchased a new Sony receiver (STR – AZ3000ES) and am trying to control it with the harmony hub. The receiver, as well as the other equipment, responds to turn on with the Harmony hub, but I cannot get it to turn off the receiver. The other equipment does turn off.
When I use the harmony app, I can turn the receiver on/off so I know there is good communication. I confirmed that the end sequence in the activity section of the app is supposed to turn off the receiver. I presume that when I give the instruction to turn off the television that the end sequence would be initiated.
I am also using Alexa to control the hub and it works well. The receiver has just one button on its remote to turn on/off the receiver so there are no dedicated buttons to control power.
Any suggestions to resolve this would be greatly appreciated. Thanks

Can you go into "devices" on the remote and turn the receiver off that way? If not, the command doesn't work, and unless there's a IR command that will turn off the receiver, you're probably stuck.

You can contact Harmony support and request that they fix the command, but there's a long wait for that type of service.

I did two things to fix mine at the same time and it worked, so I don’t know which one it is. First I went to the devices list in the app and clicked edit devices and then clicked on the receiver. Then I clicked add/fix command and followed the steps to fix the power toggle command (requires original Sony remote). Then I clicked power settings under the edit device menu and switched it to turn off when not in use. Earlier it was on keep device always on. When I did both of these I fixed it. Hope this helps.

Did you ever find a fix for this Autom8? I am in the same position. added the device. The device commands work with a harmony 665, but the activity commands won't work for the same device. Sony Receiver , STR-AZ3000ES

just to update here also, here is my workaround. Again Sony STR-AZ3000ES. Device buttons work fine, but activities wouldn't power or change input on the Sony. After much testing, I increased the powertoggle command tp .5 seconds through the device power settings. This made the receiver turn on and off.
To make the input work correctly, I made the harmony learn a new command, naming it something simple. Then customizing the activity, i can add the new command (there was a basic set of commands there initially, but oddly no input commands?). Adding the new commands lets it power on, switch input.
funny enough Help won't fix the input issue when used. Help must only run through the mandatory activity sequences not the added in buttons.