I don't know of any place that takes these for repair. I have replaced one myself using the parts and instructions found below. I was already very experienced with replacing parts on Kindles before I did this repair.
Replacement screen at
http://www.powerbookmedic.com/Amazon...y-p-76184.html
Do it yourself repair video at
https://www.ifixit.com/Guide/Kindle+...lacement/37464