Crate PA^-FX Box Mixer

First off this belongs down in the Live Sound section under PA systems. it will probably be moved there.

You need PS6-fx or PA6-fx? Your title and your test disagree. I am not aware of a PS6, but PA6 and PA8 are legit model numbers.

Assuming PA6, I think this schematic covers the power amp in the several variations of this model series:,_PA-8_Schematics.pdf

Meanwhile, there are also layout drawings and parts lists. For the full file, CALL Loud Technologies near Seattle, and ask for the drawings.