Problem with Pentax K100D - Suggestions??

[slmjam]

I have a Pentax K100D Super I've been using all week at WDW with no problems until today. This morning when I pressed the Fn button to access AWB, ISO, Drive Mode, etc.. to change a setting, the OK button will no longer accept my change. If I just turn the camera on and press the Fn button and don't press anything else, the camera automatically opens the Drive Mode options and starts scrolling through them. It's like something got stuck in the camera and I can't get it to release. I've tried to reset the camera to its original settiings, but because you have to press OK to do, it's not working either. Any Pentax users out there had this happen or have any suggestions? I just bought this camera at Christmas and aside from taking random shots for the last month or two, this is the first major time I have used it for photos.

 

[gokenin]

I looked on the pentax forums for a similar case and the only thing I found is that some people had this problem with lithium batteries of with batteries that were low on power. Another person had a problem like this but it had to do with the camera and a sigma lens being incompatable. all i can suggest is you check these things as I have not had this problem myself so I can not offer any personal advice. Best of luck and hope it all works out for you

 

[ukcatfan]

You do not by any chance have the Sigma 24-135mm?

 

[Groucho]

Maybe a button got jammed on somehow? Or the OK button is just plain broke?

I'd say try a different lens and batteries; if it's still happening, return the camera for service as it's probably a hardware issue. Something probably very simple but frustrating, that OK button can be pretty important.