I was recently on a shoot using my 7D but I wasn't the one shooting. The DP using my camera encountered a problem where every time the camera turned off, the settings would refresh themselves. The camera would switch from 24 fps to 30 fps, the white balance would return to auto, the picture profile would reset as well. In the end, he had to store his settings in one of the User Profiles and even then, he had to constantly change the framerate when the camera turned off.
I'm trying to troubleshoot the problem now, but I can't seem to replicate it, and this never happened to me when I was shooting with it. Has this ever happened to anyone before?
The only thing I can guess is that maybe there is some internal battery inside that stores the camera settings and this battery might have died before we started shooting. I generally don't store the camera with the main battery inside, but perhaps this battery was keeping the little internal battery charged.
Any advice would be greatly appreciated.