Can anyone offer any specific techniques and tips for troubleshooting? I realize this is a difficult question because the ability to troubleshoot comes with experience and time, but when I learned the "divide and conquer" technique here (repeatedly splitting the circuit in half to pinpoint problems), it was really useful. Are there any others like that? Currently, I am doing mostly residential, along with some light commercial. Troubleshooting tips specific to resi would be really helpful. I'm wondering if there's some kind of protocol or checklist that you can use I troubleshoot. Thanks in advance.