You must have been in this situation. You flip the switch and the fluorescent light above your head doesn’t come on. Or, it comes on after a moment. Or, it comes on and flickers.
When it doesn’t come on, you take a look. Sometimes, moving the bulb or outlet somewhat causes it to illuminate. Other times … nothing. This may be due to a bulb burnout, even for long-lasting fluorescents. It can also be an issue with the starter.
Fluorescent light bulbs don’t light the same as LEDs or incandescents. They contain a vapor that, when ionized, gives off ultraviolet light when ionized. The UV light creates particles which glow a white or yellow. Do do this, a fluorescent light starter is required.
The starter runs on an open-closed switch. When power does not flow into the light fixture, the circuit remains closed. Only after the switch is flipped and current begins to move do the filaments at each end of the tube activate. This heats the contacts. When enough heat is generated, the switch opens. At this point, the particles are illuminated and the bulb lights.
Therefore, if a bulb does not light, even when brand new, the issue …