I know this is an old post. But I have just had a similar problem. It was saying it was playing in HD I could control it with Premiere Pro but no image or record button. Then I remembered I had done something with down convert on last time I used it. That was the problem. I had left down convert to DV on, and so thats why it wasnt showing as anything wrong on the camera.. Hope this helps if your still having problems months later 😛 or if anyone else comes across this.
Dan Browne
Hawkes Bay, New Zealand
Membrana