TV won't recognize/control my cable box

[Mocha0704]

TV: Q60C

Cable Box: Xfinity XG1v4-A Model; AX014ANM

The first day I got the TV and connected the cable box to it, the TV recognized that it was Xfinity and showed it, but then it changed to HDMI 2 and when I tried unplugging and plugging it back it, it doesn't recognize it and when I do the universal remote setup and put in the model it still can't recognize it. Is anyone else experiencing this?

[Robin621k]

Have you tried to perform a factory reset of your TV and start over?

[Mocha0704]

Yes, it still did the same thing

[Robin621k]

Have you tried to put the cable box in HDMI 1, HDMI 2 is the E ARC, for a sound bar

[Mocha0704]

Yes

[Robin621k · Accepted solution]

Try this, unplug everything. Power first, HDMI cables. Then wait 30 minutes, plug everything back in, power first, then HDMI cables.

[bill-e]

What length is the HDMI cable?  Longer than 2m may not work. 

[Mocha0704]

Mine is only 3 ft.

[bill-e]

It could still  be the cables so I would try another if you have one. 

FYI, I did a little research recently and found a couple of articles on HDMI, specifically addressing long cable but I was surprised to find out that the most reliable length is 6'(2m)...interesting.

[Robin621k]

It worked for you, Yay. This is more common than you would think it would be. It has happened on every TV I have owned.