TV shows a error message saying cables are loose or there has been a lost signal then TV goes ...

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Forum

Greetings

We set ours to Comcast and used X1, but when we enter that model manually, it comes back with an error that the model number is not valid. We then enter one we know is in there...XG1A, and as it so happens, our set top X1 box is XG1-A. After entering that,
it states that our TV is setup and it has the proper Samsung Model for it, it states that our Cable box is setup and it shows the XG1A model number. It looks like everything is ready.

BUT....When we then go to the TV app to try to watch it, we get an error message that the TV signal has been lost. Sometimes we can see the guide info, but even THAT is incomplete despite the fact that it has our proper zip code and cable location provider.
We are at our wits-end and cannot get this to work.

Any other ideas? We have Comcast Cable Xfinity via cable modem and a brand new 1TB Xbox one which works fine on it's own for games, but won't let us get our TV through it because of this lost signal error.

After one day of having the xbox one hooked up to get the cable box hdmi signal from my Yamaha RX-V665 receiver, the cable box seemed to be overheating (presumably from Xbox pulling video constantly / polling the tv guide). The issues seen are the xbox displays
"We lost your TV signal, make sure your cable or satellite box is on and plugged in to the xbox" randomly while watching TV, at which time the display on the cable box shows "DUI (download user interface) as if it has just been restarted. Tested using through
receiver and directly connected to cable box with the same results, TV freezes and signal is lost often within moments randomly. Immediately after having the issue I can hook the cable box up directly to the TV at which time the TV signal works flawlessly.
Therefore the issue has to do with how the xbox one is utilizing the HDMI signal to and from the cable box. The cable box has never exhibited these issues before and doesn't have them when not connected to the xbox.

an hdmi cable connected to a plasma tv and sometimes it also has the xbox on and i can hear it but not show the xbox screen on the tv it says no signal and the hdmi is connected snuggly

I tried 3 different tv’s and different HDMI cables. One tv show’s black screen and the others say no signal