When I use the Chromecast app on my iphone, I see the Chromecast device, I select it, then a screen comes up and says F3Q7 Change input on TV until you see a setup screen with this code on it. I have gone through all the pre-configured labels on HMDI #3 Port that Chromecast is in and I never get the setup screen. PLEASE HELP!!! Im about ready to chuck it all.. :

Televison & Video - Proscan