Tracking Down Intermittent Electrical Problems
The hardest problems are the ones that won't show up on cue: a light that flickers only when the washer spins, an outlet that works in the morning and not at night, a breaker that trips once a week. Replacing parts at random rarely solves them.
What helps most is the pattern. When does it happen, what else is running, and did anything change recently? With that, I test the circuit under load, open the devices and splices along it, and check the breaker and its connection in the panel. Loose connections are a frequent culprit and deserve prompt attention because they can heat up over time. Once the cause is found, the repair is usually straightforward.

