Not having a good week for camera kit. My new (to me) Pentax 50-135 broke at the weekend, bayonet came partly away from the lens body, possibly damaged by the previous owner (I've only had it a few weeks), possibly damaged by my kids. So far, so bad. Tightened the screws which had come loose, reattached it to my K5, turned on, battery icon flashed empty a couple of times, camera now refuses to turn on. Have tried a couple of batteries, same result.
So, is it possible for a faulty electrical connection on a lens to break the camera body? A bit of intellectual discussion on this point may help keep me from crying into my camera bag.