Originally posted by jamesm007 Pentax has stated many times the DA* lens are sent to Japan to be refurbished as they are too complicated for repair shops, they are not trained to repair them. Its kinda well known you will get back a refurb when you send in a DA* lens. Here in the USA Pentax has trained and is starting to use C.R.I.S to do all their repairs. JohnCPentax has even said customers may get refurbished DA* lens. Maybe in other countries they do repair them, I am not sure but I don't think so, I think the customers think they are repaired until a customer gets one like yours and knows...
I don't know about the US, but this is not true for Germany, at least. Sending back DA* lenses to Japan was only necessary during the first six months, when they were released, because technicians had no training and the mandatory measuring equipment wasn't available in Europe. That has changed to the better even befor Pentax sourced out the service departments over here and now the lenses are repaired in our service centers (or whatever is called so.)
My own DA 16-50, which broke down completely was not exchanged for a refurbished one, but indeed repaired. The repair job seems to be fine, but took more than two months to complete, which is unacceptable. And I know for sure, that this lens did not travel to Japan, but lay in Hamburg and gathered dust for the most part of the turnaround-time.
Ben