The antenna works with all our other TVs, so the antenna is not bad. And the antenna is facing the same side of the building as it does when it works on one of our other TVs.
I have been through ALL the TV reset steps described in various posts to this forum. The input is antenna. Right now the TV is receiving 3 digital channels.
When I select either Auto Program or Add Digital Channels, the process runs for 1-2 minutes and finds 32 digital antenna channels. The progress bar is only about 1/3 of the way across the screen (if that even means anything). At the same point each time I try, the process stops and the display goes back to the channel it was on when the menu was accessed.
The 32 channels "found" are not saved. I cannot input any channels directly (or I haven't hit on any of the 32 when I try).
I tried a different antenna with the same results.