convenience outlet at back of Samsung Cable Box

Feb 23, 2018
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I just replaced an old Scientific Atlanta cable box with a new Samsung SMT-C5320. All my issues have been solved, however,
I had the flat screen and audio amp running out of the convenience outlet so they shut off when the cable box did.
The new Samsung outlet is power on even when the cable box is off. I didn't see a toggle in the setup that would allow this to only be powered when the cable box is on. Is there anyway to do this or do I have to "modify" ?