Peavey IPA 150t

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Anybody have a schematic for this thing? Its one of those mono PA amps, 150wrms.

I picked it up for free. Previous owner said it didn't work, and the fuse was blown. The two zener diodes that regulate the power supply for the opamps must get really hot, as the pcb around them is brown. I'm guessing Peavey undersized the resistors dropping the voltage from the main supply. Other than those i don't see anything wrong with it.
 
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