Yahoo has a Seeburg group.  It takes a few times for the admin to allow access. Dunno why. 
http://lists.netlojix.com/pipermail/jukebox-list/Google is also hosting the oa juikebox discussion board - aka old alt. groups 
Not a lot of activity, but I have  found answers
https://groups.google.com/forum/?hl=en&fromgroups#!forum/alt.collecting.juke-boxes
And there are several members here with jukeboxes or restore them ( oh, like me) 
Ask away.
Are any of these groups as friendly and informative as this site? Not on your life.