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Vintage Synth Repair

Index last updated: 2026-04-28 23:41 UTC

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Prophet 10

2008-04-06 by fsimon100

Does anyone have a descent schematic of a Prophet 10? I found a free 
one and it is hard to read. Plus it has a 12volt regulator in the 
schematic where I actually had two 5v and I put in the 12 and fried a 
dual flip flop for sure because it buned me when I touched it. Then I 
looked deeper in the connectors and see 12v is not needed and I messed 
up. I could share the schematic to show it was wrong if anyone wants to 
see. But now I have +15,-15,+5,+5 in TO-3 high power regs and replaced 
the flipflop and all voltages are good but unit is still down. I may 
fried something else but once the flip flop shorted it pulled the 
supply down. 

I bought this non working for $30 but would love to fix it.

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