that channel signal is too weak for that TV to pick up, that's why it won't stay on it and goes to the next channel. A possible other reason is someone has used parental software on the TV to block you from viewing that channel. Supper been coming in later than a spouse expects and and spouse blames watching the TV while cooking being the cause? Have a joker around the house that likes playing games with the V chip?
The kitchen TV which is connected to a central roof antenna has suddenly refused to tune in channel 23. There are 4 other televisions around the house that are all connected to the same antenna and have no problems receiving the station. We are a non pay TV household. This particular TV is on the kitchen counter and until a week ago, was receiving every channel, including 23 without issue.
I tried unplugging everything, waiting a minute and reconnecting everything (the antenna cable and the power is "everything") which results in every available DTV channel except 23 (23-1) being memorized.
If I try to set the channel manually, it goes to 24.