ABC WSB-TV Channel 2 is currently working on their digital broadcast tower. I'm not sure what the problem was, the news story attached at the bottom of my thread isn't very descriptive.
WSB-TV finishing up digital antenna fixes| ajc.com
The station has been telling viewers it would take about 10 days to fix the problem. “We hope to have [the signal] back to normal very soon,” Hoffman said. “It is a temporary inconvenience we wish we didn’t have, but was inevitable.”