This is a bad design that could of been fixed with a little locktight. The stupid thing is that all the other screws on the camera have locktight on them but the ones INSIDE the camera dont.
This camera has a little 52MM METAL adapter ring on the front, it is held in place with 3 METAL screws. After some use or some time of switching the lenses this adapter ring works these 3 little screws loose and the fall inside the camera. They eventualy work their way into the power supply board and short the unit out. Now your left with a nice looking paper weight.
All they had to do was put 1 drop of locktight on each screw and it would be a nice reliable unit but no.
If you get one of these first thing is fix this problem or it could later bite you in the ass.