Behringer EM600 Echomachine schematics available?

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I wouldn't bet my life on that, but let's cross that bridge when we get to it.

But start with measuring voltages (not resistances, at least not yet); and see if you can also identify any voltage regulators on the board.
I have seen shorted voltage regulators in my professional life. Had a card with a 5V regulator sending out 15V. Plays havoc with logic circuits.
 
Also, i doubt the DSP chip itself needs any programming (i doubt it has any internal nonvolatile memory); the microcontroller that's running the show (ATmega 16A), on the other hand.....
 
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