Also I did some research for you and found no common problems with this camera on a large scale, so your issue seems to be isolated and rare. Also the camera has a lot of excellent reviews so the replacement should work fine for you;-)
You can use this company as I can recommend them highly. They are fast and do excellent work.
but first I would contact QVC or Pentax to see what they recommend, as QVC may replace the camera for you quicker.
Factory authorized service :
QVC warranted issues:***-***-****.
In any case, I will stick with you until this is complete.
Please rate kindly thus far, it won't cost you anything to rate my service to you kindly,
Then you can reach me by simply replying to this message anytime.
Thank you and have a wonderful day!