NEW ORLEANS — As the Superdome's energy provider and stadium management try to determine what caused a 34-minute power outage at Sunday's Super Bowl, local officials are hoping the incident won't leave a black eye on the city or prevent the league's big game from coming back to town. Larry Roedel, a lawyer for the state board that oversees the Superdome, said Monday that the outage did not appear to be related to work done on the stadium's electrical system in December. The work, approved by the Louisiana Stadium and Exposition District last fall, replaced feeder equipment connecting the stadium to power provider Entergy New Orleans.