Calculator schematics

I have an ancient Commodore calculator and am needing a schematic in order to see if it can be repaired...Anyone have an idea where I can find those?

Thanks

Have you tried any of the calculator museums out there? If they do not have the schematics, they can still sometimes repair them.

The one I am trying to repair has a funky battery setup. It look like the wires corrosed and I cannot figure out where either power goes.
Should not be too hard if I can find the schematics.
After all ...I may have the 'magic stare' again!