I have two receptacles that I haven't used in months that now don't have power. One is outside in the back of house, the other is in the garage - in the front of house. They are on different circuit breakers and neither have GFCI outlets or circuits on their lines (after this issue is figured out I'm planning to replace these with GFCI -- good ida?). The breakers are not tripped.
I tried flipping the circuit breakers on/off - didn't help. I used a voltmeter on the wires -- no current.
Is there anything else I could do to troubleshoot this issue? Run a continuity test somewhere? How would an electrician troubleshoot this?