Canon A75, loses image completely-maybe image...

Question

I've had my A75 for a little over a year. I love this little camera and have been through thick and thin through it. In the last few weeks, I'm not sure what is causing it but I will get this:http://www.steadief.com/temp/hike/IMG_68...A few minutes before the pictures were great. A little while later they are great.I've tried:-Changing the batteries.-Removing and re-inserting the CF card.-Changing the setting selector on top of the camera to every other setting.-Depressing the shutter to make the camera autofocus-Using manual focus (even though you can't see anything)-Pointing it into bright light-Pointing it into the darkI'm stumped. It appears if I let the camera sit for a while, it then works again.Any suggestions are welcomed. Thanks in advance.