I have used an antenna for several years with no issue. My son recently gave me a TV and after a channel search, all was working fine. After several days, two of the local stations disappeared from the channel list and I can't add them back by channel search. Another TV in the home still has the channels so it's not the antenna or the station's signal. In my area the channels in question are 9.1 and 9.2. I can't even get those to show up on the TV's list of channels when I attempt to manually add them. Not sure what direction to take.