Why Do LED Bulbs Glow after the Power is Switched Off
Do you have LED bulbs that emit dim light even after you have switched the power off?
Well, you are not alone.
This is a pretty common problem (especially with cheap, low-quality LEDs). The good part is you can fix the problem easily—and by the end of this post you will know exactly what you need to do.
So let’s get rolling.
Why Do LED Bulbs Glow When Off?
An LED bulb, compared to halogen lamps or incandescent bulbs, has a much higher resistance on count of the integrated power supply unit. What happens is that the serial connection of the glow lamp clamps the circuit even when you turn the switch off. This, in turn, causes a low voltage drop to appear to LED driver, and as a result the LED bulb glows weakly.
Apart from this, there are two other reasons because of which LED bulbs may glow even when off. These are:
- Poor quality
LED bulbs vary a lot in quality. A low-quality LED may glow, buzz, or flicker even when switched off
- A problem with electricity circuit
At times the problem lies not with the bulbs but with the electricity circuit. What happens in such cases is that the light switch lets through electricity residue even when you turn off the switch.
This, in turn, can happen because of any of the following two reasons:
The earth wire is at an extremely high resistance or the neutral wire is not bonded properly to the earth.
An electromagnetic induction may be causing a small pick-up of electricity from cables running along each other.
How to Stop Your LED Bulb From Glowing When Switched Off?
- Replace the LED bulb
Have you recently replaced incandescent bulbs with LEDs only to find them glowing when off?
If yes, we recommend you buy a replacement from a recognized and reputable brand, like ours.
- Make sure there’s no problem with the wiring
Ask your electrician to look at the wiring in your home. He or she will be in the best position to advise if the “LED bulb glowing when off problem” is occurring because of cabling packed too close or some other wiring problem.