For Sale Gen II Prius MFD Nav not working

The MFD died in my 2007 Prius w/ Nav. Everything just went dead. Radio still works, etc through steering wheel controls. I bought a used replacement from LKQ on ebay and installed that this evening. I have read that a common failure of the MFD is a cracked screen, which to the best of my knowledge I don't have. So I have a used NAV MFD that doesn't work. Is someone out there fixing these or merging ones that have cracked screens or....?