Thank you for contacting Samsung.
We recommend you review the following support article (Please note: On current Samsung TVs, when you use the On/Off Timer, you can only set the source to Cable or Antenna, and then a channel from one of those two sources or, on some models, to an attached USB device. You cannot set the source to any other input source (Component, HDMI, DVI, S-Video, or PC):
Thank you for being a Samsung customer!
The Samsung Online Support Team
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