Originally Posted by
mtv
Could be a number of things.
Firstly, if you do a channel scan and the signals are too low or have high bit errors, the tuner will not lock onto it.
The same if you have already stored a channel and the signals have dropped below the 'digital cliff edge".
Do you have the antenna connected directly to your screen, or looped through another device first? (this often causes problems).
What signal strength & quality readings are you getting on your channels? Keep in mind STB/tuners signal measurements are notoriously innacurate.
Where are you located? If you are in a metro area, how's ABC digital?
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