Channels all gone black

All of them. I use TWC. I have done a hard reset, did the guided setup again, soft reboot, nothing is working. There is no outage in my area that I can tell.

My tuning adapter is plugged in and seems to be working but my Tivo doesn't show it as being connected. I've tried to reset it and the channels won't come back. I'm wondering if I should exchange it for a different adapter.

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