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Smart TV forgetting the saved HDMI input for cable box.

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My I setup a new Samsung sound bar tonight and I'm having an issue w the Smart TV and HDMI.


UN65MU6290 is the TV.


I plugged in the cable box to sound bar and then the ARC to TV. This worked great. ARC is working etc. Then I label HDMI 3 on the TV as Cable Box so iIcan save it on my app bar. When I go to use the cable box, after using YouTube for instance, I come back to find he HDMI 3 had been forgotten and I then have to relabel and read to app bar.


It's more an annoyance than anything but it used to work fine.

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