Prior to a long trip everything was working. Disable the programs so no watering would take place while I was gone. (Still repairing breaks in the lines) when I returned using the mobile app tried to start a zone to working finding the next line break to fix and nothing happened. Tested all zone and nothing. I know ospi is getting power and the raspberry pi is working. Every looks good on the pcb (nothing melted burnt or anything that would say a component on the pcb went bad. I connect a volt meter to the zone connecting and tried again but nonly voltage shows. Any idea what I should look at next?