My home was built in the late 60’s. An outside porch light was on a timer that recently broke. I replaced it and it works fine, however, now I have no power to five outlets. One is outdoors and the other four are inside. All are along the same wall or vicinity. These do not have gfci resets. Do I need to start replacing one outlet at a time to find the culprit?
This is a common problem with daisy chained outlets. I have learned over the years to find the first non working fixture closest to the breaker panel or last working one and usually find a bad back stab. Or wire nut. Since you just did some work you may not have connected all the hots or neutrals solidly where you did the work. So there 2 paths forward depending where the chain originates from. If the power to these outlets comes from the timer box 1 of the wires may not be making a connection in a wire nut. If the source is from the other direction find the first failed or last working outlet.