This could be on the switch itself, at the circuit breaker panel, or in a pass-through wire connection in the wall box or ceiling box. By far the most common problem is a loose wire connection at the switch itself, which is subject to constant on-off usage. Less commonly, a light bulb socket may go bad.

Why does my light turn off when I turn it on?

As the bulb and light fixture heat up, they expand eventually causing the loose connection to be broken, turning off the light. With the light off, they cool down and shrink, remaking the connection so the light turns on again.

Why does my light turn off after a few seconds?





A bulb that stays on for a few seconds then switches off is likely overheating. While not extremely common, it’s also not too rare when you have recessed lights in the ceiling, especially if the fixtures were initially designed for other types of light bulbs that normally generate more heat.

Why does my ceiling fan light turn off after a few seconds?

The ceiling fan light can go off after 1-2 seconds because of a possible fault in wiring or supply or if the bulbs used, exceed the wattage limit. It is best to ensure that the bulbs that are used do not exceed the wattage limit set for the fan lights by the manufacturer.

Why do my LED lights come on then go off?

It’s either your controller or your power supply, which is either failing or exceeding its wattage capacity. It’s most likely the power supply/transformer if it’s older than 3 to 5 years. If your power supply is outside or in a place where there isn’t much air circulation, it will deteriorate more quickly.

Why does my light go out after a few minutes?

By far the most common problem is a loose wire connection at the switch itself, which is subject to constant on-off usage. Less commonly, a light bulb socket may go bad. If so, you will need to replace the socket.

Can light shuts off randomly?





These light fixtures come with a feature that shuts them off to prevent overheating, since recessed lighting doesn’t allow for a lot of room to breathe. Usually once the fixture has cooled sufficiently, the light comes back on. If your recessed lights are turning themselves off often, it’s likely there’s a problem.

Why did my lights go off and on?

If the flickering is confined to a single source, the lightbulb in that lamp or fixture may be defective. Poor connection in your main circuit panel. A more serious cause of your lights turning on and off repeatedly is a problem in the electrical connections in your home.

Why do my LED lights turn on for a second then turn off?

The most frequently observed reason for LED lights turning OFF after a few seconds is the wattage issue. Within a circuit, the LED light bulbs may be getting more current than they need. The best fix for this is to add a watt limiter in the circuit.

How do you troubleshoot a light bulb?

Tighten the bulb if it is loose, then try the switch again. If a problem remains, be sure the switch is off, remove the bulb and substitute a new one. If the light does not work with a new bulb, check whether the circuit breaker or fuse governing the fixture has tripped or blown.

How do you know when an LED bulb is going bad?



One of the most common problems when using LED is the light flickering. The lights are basically strobing. If you are using poor quality LED bulbs or flood lights, then you will observe the brightness goes up and down rapidly. If the flicker frequency is below 80 to 100 Hz, then it can be observed by naked eyes.

Why do my LED lights turn on randomly?

They do not normally turn on by themselves. If they loose power…they will immediately turn on when power is restored. This happens even when the lights are powered off but still connected to a live power source.

What can go wrong with LED lights?

The Most Common Problems with LED Lighting

  • Most Common Problems with LED Lights.
  • Using the wrong current.
  • LED bulbs overheat.
  • Low quality solder and wire bonds.
  • Improper use of LED lighting.
  • Issues with color rendering.
  • Existing fittings and fixtures are incomparable.
  • Light Emitting Efficacy.