>>2978232yea the blades almost never fail. and if they do, its usually because some random screw or something came loose and found its way to the shutter blades. so if you look at the shutter and see the blades messed up, you most likely have some loose object youll really want to address as well. a loose screw could cause short circuits.
i did that 30d a few years ago, can not remember what was charged. most cameras need the image sensor removed to replace the shutter. image sensors are set at a very exact flangeback distance. older cameras like the 30d used washers to set the flange back distance. so when replacing a shutter, you simply make sure all the washers go back in the same spots and your flangeback will stay the same. newer cameras however use metal or rubber springs, and so require resetting the flangeback everytime the sensor is removed, which takes a little more time.
a 30d shutter can be replaced in maybe 45 minutes. cameras that need the flangeback reset take about an extra 10 or 15 minutes. now changing mirror boxes is where the funs at, pic related (another 30d)
