This is my Canon HF100. I took it out to a house viewing recently to film the outside and inside of a potential purchase to show my parents later on. It was about -4 degrees Celsius outside. I filmed the outside of the house and garden etc for about 4 minutes, then put it in my jacket to carry about (about 10 minutes). When I tried to use it again 10 minutes later to film the inside of the house, it wouldn't start up properly.
It would make the start-up chime noise, but the screen stayed black. The only way to turn it off was to remove the battery. I tried to turn it on about ten times, even pressing the reset button behind the battery but still, nothing.
I presumed that it must be too cold for it so I took it to the car and blew warm air on it for a minute or so. Then it started up fine. Except that it was now making the noise you can hear on this video. The noise would stop and start occasionally whilst filming, but I got what I needed and assumed the noise would stop later...... It hasn't :-(
After more investigation, it appears that the noise only happens when the camera is tilted to the left and stops again when tilted to the right. When the noise occurs, autofocus seems not to work (as shown in this video) but as soon as the camera is tilted to the right again, the autofocus seems to 'kick in' again.
Best to view in HD Shows focus problem more clearly.
Any ideas any one?