Hi all,
my dbx 386 has started giving me some horrendous noises on one channel. I've tried switching the tubes between channel 1 and 2, and the same channel still has the problem, so obviously my tubes are fine. Does anyone know where I might get a hold of some schematics so I can track down the problem?

Alternatively, can anyone suggest where to start looking?

The output meter shows signal (not constant, but varying) with nothing plugged into it. It varies with the input/output controls, but is not affected by any of the other controls (phase, phantom, pad, dig/analog, line/mic). When you plug the output into a PA you get a wonderful static type noise.:confused: