Canon EOS 60d - Err 20
I have been using my camera in a very humid place (Samoa). I took it out of my air conditioned room into the heat, took a photo. There was a click and the mirror flipped up and stayed there. All I see through the viewfinder is black. An "Err 20" message came up on the screen. The problem has not gone away despite powering the camera on and off, and removing and reinserting the battery. According to the Canon website, the message means that there is a hardware/mechanical fault. I'm off to the USA next month and need a camera. I am many miles from a service agent at the moment. I can get it looked at next week (in Australia). My questions are about whether I should repair or replace my camera (with the 70d).
How quickly do Canon do repairs?
Are their charges reasonable or are they likely to be close to replacement costs?
What is the quality of repair work?
Is the 70d better than the 60d enough to justify replacing my old camera?