Originally Posted By trackbike
I have multiple video sources for my home theater system controlled by a Logitech Harmony universal remote utilizing their hub. Whenever I turn on my system selecting a new source the prior source used when turned off is selected. I need to select the source button a second time to change. Once the system is on selecting a new source works as expected and I don't have to select it twice. Any ideas on what requires tweaking to get the system to turn on properly with a new source? Add some delays?

Assuming you already have Harmony set to start this activity with the AVR using a specific input:
You may need to add a delay for the 976. There's a setting for a device that controls how long Harmony waits after power on before sending any commands. I think that's in the power settings for each device.