Roland GI-10 Guitar MIDI Interface

[obiwanjacobi]

I have a Roland GI-10 that does not power on anymore. My suspicion is that someone put a too high a voltage on the power input that takes 9V. I am trying to decipher the 4 or so voltage regulators that seem to be in there. I think a schematic would help me determine the intended voltages.

[obiwanjacobi]

This is the power section part of the schematic I got from a Roland rep.