Samsung UE65TU8502UXXH E-Manual page 186

If the remote control sensor is not turned on, unplug the power cable and plug it back in.
Disconnect and reconnect the One Invisible Connection cable between the TV and the One Connect (OC) Box. Make
sure that the One Invisible Connection cable is not pinched or bent sharply.
Power
One
Invisible
Connection
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One
Invisible
Connection