PROBLEM :

Run the TV power cable through the wall

SOLUTION 1

Samsung TV power cables are UL (Underwriters Labs) certified but are not CL (In-wall) rated.

A CL rating on a cable (CL2 up to 150 volts, CL3 up to 300 volts) means these cables have a slow burning outer jacket that should meet the fire codes. They are safe for in-wall installations. Since the power cord for the TV is not CL rated, it should never be installed inside a wall.