Osborne 01 computer

Hello everyone, I am needing schematics for an Osborne 01 computer, or some help in repairing it.. I just purchased it last week and was using it for about 30 minutes (It had not been used for some 13 years).. Worked perfectly and is in mint condition.. Then all of a sudden a crackle and smoke poured out.. It was still working but I quickly turned it off to save it from further damage.. I took it apart for a quick look expecting to find a burnt electrolyte capacitor in the power supply but did not see any damage.. I am afraid to power this unit up again for fear it will damage the mainboard.. Can anyone help me this is one of the finest old computer I have ever owned and I want to get it working again.. There must be someone that has schematics out there for it.. or maybe someone can help me dx it.. Thank You.. Phil Clayton