Originally posted by jpyykonen Did you find any solution to this? Is this repairable and how much it might have cost? My K-5 seems to have similar problem (mirror freezes up, shutter stays closed even powering off the camera and top LCD stays on, live view not working (no image)). The mode-dial stopped working as well (always in M-mode, regardless of the position of the dial). Is it worth sending to repair or just send it to dump pit?
There are several different 'freeze' problems. The most common happens just occasionally and is solved by removing the battery and replacing it. This is relatively benign and for most happened so infrequently it was not worth sending for repair.
However, there is another problem which my k-5 had that does require sending in for repair. The mirror would get stuck part way through the cycle and lock the mirror motor up causing a severe battery drain. In this case the camera would not turn off, lcd stays on, pressing the shutter button does nothing except cause the battery indicator to turn red. I sent mine in and they replaced mirror motor assembly. It has been fine since.