I have an Sony Bravia KD 55X7053 55
I am delighted with it. I have been using it successfully with a SkyQ mini box in HDMI port one. Two days ago, it show a black screen in port one but is ok in the other HDMI ports. Apple TV works ok in port one.
When I restart the skyq box in hdmi one, it works until it connects to the main box and then black screen. When I switch off the sky q box, I see the sky screen for a couple of seconds as it powers down. Ideas welcome!!