We've had Comcast Xfinity connected via HDMI for several years. One day in August 2015 we lost all four HDMI inputs. May have been a power surge. None of them were recognized. So In desperation i connected coax while I thought about getting the TV repaired.
When we upgraded our DVR box a few weeks later the Comcast Tech suggested that we use component cables to get an HD picture. It worked fine but of course HDMI is better and allows for an Internet access connection. At some point we'll replace the TV but spending $300-$400 to replace the main board which contains the HDMI jacks seems crazy when a comparable TV today is under a thousand. Check the Internet. It's not uncommon. Good luck it's frustrating.
|