Originally posted by wow One month ago my K-50 was working fine. I have not used it since. Today I turned it on, framed an image on the automatic setting, and pressed the shutter. No image appeared. I checked the battery, and it is charged. What kind of failure am I experiencing and what is to be done? I am past the warranty period. Thanks.
The "Aperture Block" issue sometimes has been reported occurring after a camera, usually a K-30 or K-50, has been idle for a period of time. The following thread explains how to diagnose this issue, which results in the camera's taking badly under-exposed pictures
Dark exposure problems on K-30 or K-50? Read me first! - PentaxForums.com
BTW - roughly what is the shutter count on that camera?