Hello, I have a metal dc jack that shorts when I plug in the adapter but when the jack isn't attached to the metal enclosure, and is free floating, the pedal works fine. Also, there are 3 solder posts on this jack. What's the 3rd one for?
Besides insulating the jack from the enclosure with shrink-wrap or something, what's the best approach to fix this? I'll probably be using the plastic insulated jacks next time. Thanks in advance!