Why do my light bulbs go on and off?
Why do my light bulbs go on and off? An intermittent problem like this could be caused by a combination of a loose connection and the waste heat from the bulb. As the bulb and light fixture heat up, they expand eventually causing the loose connection to be broken, turning off the light. Turn off power to the fixture at the service panel. Why does my ceiling light flicker on and off? If your light bulbs are flickering, turn off the power and, using a glove to protect your hand from heat, screw the bulb in tighter. Loose light bulbs...