So with this no signal option, if you want to keep the TV running, you would, for instance, raise/lower the volume every warning?
In the user manual, the 'no signal shut-off' says it doesn't work with a Digital Channel (which makes sense). However the 'no action shut-off' doesn't list 'Digital Channel' as an input that doesn't work (indicating it perhaps works with it? But I don't see how, as you described).
Even with the 'no action' mode set (3 hours), "The on-screen display will flash 3, 2 and 1 to indicate the last three (3) remaining minutes prior to the shut-off" - from the manual. So if I am watching the TV and want to raise/lower the volume with each warning, the 'no action' setting is more convenient.
In practice, I'd see myself not having an issue since I raise/lower the volume often with commercial/regular programming. However when the mrs is using the tv set and falls asleep while watching, that is the purpose of my question really. I explained about the auto shut off setting, but she doesn't want to be bothered with it.
And since the 'no action' setting doesn't exempt the 'Digital Channel' as an input, i'm curious if anyone has seen this in practice.
I presume I can practice this myself as well, seeing if it picks up the Digital signal and knows there is 'action'