Vintage Synth Repair

Hello everybody!
I'm from Brazil and I have a dead Prophet 5 rev.2.0 to repair but it's
missing the Z-80 CPU and plus 2 Ic's that I don't get to identify.I suppose
that these 2 last Ic's are any kind of memory Ic's.There also some damaged
capacitors and the Ic's 7815 and 7915 was damaged.In the first measurements
with a digital voltmeter,the voltage +15V was +30V!I replaced all the
regulator Ic's from the power supply and now all the voltages are in normal
settings,but without the 3 Ic's I know that it's impossible to make the
keyboard back to work and a complete verification of all circuits.
I would like to get some help and to know if there's someone who have the
schematics and/or the technical service manual to share or sell a copy to
me.
Good lucky for everybody!
Paulo