[Firmware is current.] I have one input into my QN90F: HDMI 1. This is my Denon AV tuner, into which are all my components. I've had this TV since March, and this problem started about a week ago.
When I start my system for the day, I turn on my AV tuner and let it finish the process, then I turn on the TV. In the past, no matter what input the AVR was set to, the TV found it. Starting a week ago, when I turn on the TV and select the Xfinity DVR, the TV cannot find it and reports a connection failure. If I switch the input on my AV tuner to Roku or any other input, the TV finds it. Even if I select another input then go back to the Xfinity DVR, the TV will not connect to it.
The only way to get the TV to connect to the AV tuner when the Xfinity DVR is the input is to physically unplug then replug the TV. Just one second of unplug is enough. I have to do this every day when I turn on the TV.
