My TV/Cable box shows a spinning dial in the middle of the Samsung 42" TV at times.

Hello, I am having cable connection issues at times with my 1 year old Samsung 42" TV. What I am seeing is a spinning dial on start up as the TV cable box is powered on. One of the movie channels such as "Tubi " has it real bad. My screen seems to lock up at times on this same channel. I have double checked all connections, replaced by HDMI cable that runs from my cable to my TV connection. I have restarted the cable box more times than I want to admit to with no good results. I have expereince these problems for the last 4 - 6 weeks or so. At one time the comcast tech came out 2-3 years ago and installed what he called a enhanser, which was suppose ensure or help the TV connection. Maybe this enhanser is not working as well or their are other problems. Thanks William.