Some stations said they set up call centers to talk views through the process of setting up converter boxes. Others sent engineers to viewers' homes.
The station manager of a Hickory station said the transition went better than expected Saturday.
Ten other stations in North Carolina were dropping analog TV signals Tuesday or early Wednesday.
Those stations are among 641 nationwide that got permission from the Federal Communications Commission to drop analog this week.
Feb. 17 was the original deadline for stations nationwide to switch, but the Federal Communications Commission agreed to move the deadline to June 12 because funding ran out for coupons to subsidize TV converter boxes.