Originally posted by bing This happened to my camera as well. I will post some photos later. It must be a defect. I am considering to file a claim to force pentax to look at this issue seriously. It might be useful. For example, nikon had to deal with the d600 issue this year.
Welcome to the Pentax Forums!
Yes, this is likely the same problem as in the other thread you posted to. I am sorry you are having this problem. From your other post, it appears that your camera was purchased used about 6 months ago and is no longer under warranty. The underexposure issue involves the aperture actuator and is a well-established hardware controller issue that started appearing in July of 2013. Ricoh/Pentax is aware of the problem and has fixed several forum members' cameras. The cost for the repair, including parts, is over $200 USD.
I suppose you could pursue some sort of class-action lawsuit. Good luck. Unlike the D600 sensor stain, all K-30s did not leave the factory with non-functional aperture controllers and Ricoh can hardly be held liable for malfunctions that happen six months or more out of warranty. If this had happened right after you bought the camera, you might have had recourse against the seller, but since so much time has passed I doubt you would get your money back unless it was warrantied by the shop. As for Ricoh, they have none of your money. It is unlikely that Ricoh will do the repair for free in return for your continued good will. You might see if they will allow you to trade up to a refurbished (and warrantied) K-50 for a similar amount.
I wished I could tell you that the K-30 has been trouble-prone. That might make you feel better, but such is not the case. My impression has been that the K-30/K-50 models have been some of the most reliable Pentax product of the last five or six years.
Sorry
Steve
Last edited by stevebrot; 09-26-2014 at 10:14 AM.