C9 Christmas Lights Not Working

Start by checking for a blown fuse a common problem with a quick and easy fix.

C9 christmas lights not working.

The christmas light tester will indicate which bulbs are bad and need to be replaced. By the third week half of them did not work. You re not crazy those lights did work last year. There are several ways to repair your lights depending on the problem and how hands on you re willing to get.

Some christmas light testers work by having you slide each christmas light bulb through a hole. In other words if a bulb burns out the filament is blown the rest of the lights stay lit. Christmas lights often burn out the moment you unplug them so the problem often goes unnoticed. I checked the fuse as instructed but it still did not work after replacing the fuse.

More than likely one of your mini light bulbs has popped out of it s socket modern mini lights are manufactured with a shunt wire that keeps the circuit intact if a bulb burns out. Second test the christmas light bulbs with an inexpensive tester available where holiday lights are sold and online usually changing a problem bulb or tightening it will fix the entire strand. It combines a voltage detector bulb.