What type.of antenna is it, powered or unpowered? Is there another antenna you could try, just to rule out the antenna being the issue (start with the cheapest part first when troubleshooting).. I'd make sure the antenna, if it's powered, is getting power, and make sure that it works with other TV's (if you can).
It's just a cheap flat type of plastic "mousepad" looking antenna indoor antenna, not powered. All three antennas that I've tried work fine on other TV's...so I'm convinced that it's either a software glitch, or the TV tuner suddenly turned to s___ when my wife did the software update. It wouldn't be the first time that a software update has screwed up my technology world.
We're sorry to hear about the issue you're running into. Please feel free to send me a PM with your Roku account email address, the serial number of your Roku TV from Settings>System>About, the software version & build that the TV is currently running. Please also include additional specific details about the issue you're observing:
- When did the issue first start occurring?
- How was the antenna configured on your TV prior to the issue you described? (How was it connected, what did you choose on the Roku home screen to watch these channels?
- What options have you tried to re-scan for channels?
- Are you able to watch any channels after re-scanning?
With more information, we can help look into the issue further.