You have to unplug the power cord from both ends as well as the one connect cable, leave it unplug for 5 minutes and them plug it back, also you can try to turn on the tv and take the batteries out of the remote to determine if something is wrong with the remote.
I recommend you to call Samsung if it doesn't work
We purchased a Samsung Frame TV about 7 months. Tonight it started to cycle through the home screen then turning itself off and back on again. We have no idea what to do. Can anyone help?

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