Ensure HDMI Control on the Model 976 is set to OFF. This is HDMI CEC, which allows HDMI devices to interact and turn on and off together.

For troubleshooting purposes, I would actually ensure HDMI CEC is turned off on all your equipment.

Send us an email with your results, customerservice@outlawaudio.com, once you've turned CEC off on everything so that we can be of further assistance.