The issue is both the TV and the cable box. The box goes to sleep every night whether the sleep timer is on or not. When you turn your TV on, it's supposed to send a signal to the box to wake up. I've heard this called the "digital handshake" between the devices. My Vizio 4K TV has the same issue. That's why some TV's have no issues and some do. I have found no fix, with some TV's, there is no communication between the devices and that's the problem. You can keep replacing boxes and getting techs but if the TV and the box don't communicate properly, nothing can be done. Because so little content is in 4K right now, a switch back to the 1080p box may be in order. Me, I reset the box every morning because I like the design and the bluetooth function so I put up with it.
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