schematics of Krell MDA300

Hi guys,
I'm writing for the first time, hope not for last 🙂
I will beg for help!
I urgent need some schematics of Krell MDA300 mono blocks! One of mine is gone and I need to repair it. I'm situated in Bulgaria, where Krell don't have service and they don't give the schematics.....
Will appreciate any help,
thanks in advance and regards!!!!!