So one local station changed frequency (ch 4 wibv). I rescanned for new stations and rescanned again to make sure the guide was correct. The new and old appeared on my channel lineup. So I checked the station in my lineup and proceeded to tune it in. No luck. Then I rechecked both old and new on the guide but still nothing. So I restarted the TiVo and did a scan again. This time the station came on air but....only if I hit the channel up button after already being tuned to it, as the screen was black with no broadcast on the tv. So now in order to watch that station I have to find it on the guide, hit select, then up channel. What? I played with checking and unchecking both the stations involved, 4.1....and 4.2 a sub station but still no good. My TiVo just recently updated to 21.7.2.RC19. Could that be responsible? Fortunately only that station is screwed up. And actually I have never had an issue with this new, or my older OTA Roamio.