I turned on my Panny tonight and I can hear the audio from my local OTA HD channels (from outdoor antenna), but no video!!! I tried all of them and none had video; just audio. EEEEEK!
Analog OTA channels looked normal. SD and HD channels from Dish Network via component look fine too. I figured I'd try holding down the TV's power button for a few seconds to see what happened. When I turned the TV back on, the video from local HD channels was back! Anyone have this happen before?

One time the same thing happen to my Toshiba 27" HDTV. Unpluged the set for a couple of minutes and then turned it back on. It worked perfectly and has never done that again. I think your TV and mine probably experienced a slight power spike that "confused" the set. When we reset the set the problem went away. I would not worry about it.