One of the recessed lights in my home office started doing this faint, occasional flicker. It wasn’t constant just a quick blink every hour or so, easily ignored if I was focused on my computer screen. I kept telling myself it was just a cheap LED bulb reaching the end of its lifespan, and I’d swap it out whenever I got around to buying a pack of replacements.
The real problem wasn’t the bulb; it was a loose wire nut inside the junction box.
Because the connection was slightly loose, every minor vibration in the house caused the electrical current to arc. Over several months, that tiny gap generated a massive amount of hidden heat. I finally acted when the light stopped flickering and just went completely dead, accompanied by a faint, ominous smell of burnt plastic.
When I pulled the fixture down out of the ceiling, I found the plastic junction box partially melted. The loose connection had charred the copper wire so badly that the insulation had crumbled away, leaving exposed, brittle wiring that was a major fire hazard.
Instead of a simple two-minute bulb swap, I had to cut open a patch of the ceiling drywall, cut back the damaged wire to where it was still healthy, and fish a completely new section of Romex back to the switch. If a light is flickering, don’t just blame the bulb check the connection before that tiny arc cooks your wiring.
