Used my G3 this AM - no problem. Then went back to use it again a few hours later and the on light blinked once then no power - I thought maybe it was a dead battery. I inserted a new charged battery and it went on ONCE, then tried to turn it back on - black display and only a few green blinks as I pressed the shutter, then nothing. It was rather hot and humid today but I can't imagine that was the issue. Any suggestions? It is under warranty but I really don't want to send it into Panasonic unless I really need to - the last time I sent a camera for repair, it took six weeks or more for it to be returned.