3/1 branch connectors in parallel panel configuration went .03 voltage while on a trip and the controller showed night mode 0amps 0watts. Unplugged the branch connectors and plugged one panel into the controller and have power. If one of the three panels went bad, could it back feed power from the other two panels and cause a zero voltage condition at the branch connector? I bought replacement connectors and have the same zero voltage issue so I’m assuming one of the panels is bad. Can’t find any references to this problem online. Have run the system two years problem free.