* Your antenna may not be properly connected. Make sure that the antenna is securely connected to your TV. If it is loose, it may not be able to pick up the channels.
* Your antenna may not be in the right location. The antenna needs to be in a clear location, away from obstacles like trees, buildings, and power lines. If it is not in a clear location, it may not be able to pick up the channels.
* Your TV may not be set to the correct input. Make sure that your TV is set to the correct input for your antenna. If it is not, you will not be able to see the channels.
* Your TV may need to be updated. Some TVs need to be updated in order to pick up new channels. Check the manufacturer's website to see if there is an update available for your TV.
If you have tried all of these things and you still can't scroll through channels, you may need to contact your TV manufacturer or your antenna provider for help.