Read http://www.cnet.com/forums/discussions/lg55ls5700-msg-asking-to-select-tv-input-pops-up-randomly-565772/ where a reset cleared it up.
Sometimes it's just defective and needs to be returned which is what I'd do if mine was like http://www.lgwebos.com/topic/1872-annoying-persistent-av-popup/
I keep getting this annoying popup on screen saying "only available in TV input. Do you want to select TV input?".
Most of the time when i try smart remote pointer to click on No, the pointer would blink and won't go to no.
Clicking the physical button will remediate the blinking pointer issue.
Sometimes if i don't do anything popup disappears automatically.

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