Spend42

Is it possible to blow out gate outputs on your Midibox CV? I've been using mine for about 5 years (AOut version), and I built a new ADSR yesterday (http://electro-music.com/forum/viewtopic.php?t=54641) and when I went to go test it it seems to have blown out the gate on my midibox CV i was testing it with. I tried a different gate output and that's dead now too. I was using one of the gates off of J5 that come directly off of the PIC. I don't see any voltage on the gate input from the module, the only thing I can think of is that the module was in my new cabinet and it runs off of a different power supply. Maybe there was a ground differential between the two cabinets? Any Ideas? I'm stumped. Can anyone think of a way to fix this? Should I have put some sort of protection in place on my gate outputs?