ride today the radio display went out ('06 ultra) . Radio works fine, just want see anything on the face

any ideas where I should start?

 

Possible liquid damage? From reading past threads, you'll probably need to send it off to Iron Cross Audio for a repair.

https://www.hdforums.com/forum/touri...ml#post9791554

 

Send it to Iron cross . They will not only fix it but fix future problems . 99% chance it is a connection that needs fixing.
If you want it fixed right and done once .

http://www.ironcrossaudio.com/

 

Mine did that too. Pulled the radio out and found the faceplate was loose, a little duct tape took care of it. No problems now.