Hello from the future I have the same problem that my camera was working perfectly until switching to RAW mode. I tried to shot raw pictures (for lesson) and camera started to shutting down while saving raw picture. After that my camera doesnt turning on because of card read error. I formatted card and the camera started to work again but I didnt use for 4 months. Today I checked camera again and it didnt work on photo mode. I formatted again and recrated files to card, it started to see photos but not switching to camera mode. (I tried with batteries and adapter)
I will buy a new camera soon but I want to keep this as secondary camera. Thanks...
Somobody who use olds, April 2017