Light switch won't turn off, could there be a fire?

Why doesn't the switch turn off the light when you press a key?

The light switch has stopped turning off the light (that is, whether it is on or off, the light remains on). According to the advice, I replaced the switch (or switch) with a new one and stripped the wires. The problem remains the same - the light just stays on! Help - what could be the next question?

24 comments

Need more information on this issue. Did the switch work, and then suddenly stopped, or after replacing the wiring and installing it, did it stop performing its functions due to improper connection of the junction box. Maybe you have a chandelier with a remote control and the relay unit is simply soldered?

Good afternoon I came home and the light is on in the bathroom, although I remember exactly that I turned it off, and when I flip the switch it doesn’t go out, tell me what could be the reason?

The key on the switch works but the contact is not disconnected, it is stuck, this has happened before. The key can turn off, but the contacts have not opened.

You need to inspect the wires in the distribution box. Perhaps they are stuck to each other.

What if after replacing the switch nothing has changed? Is the light still on?

You need to inspect the wires in the distribution box. They stick to each other over time.

Good evening! Yesterday I turned on the switch (light), but could not turn it off! I had to unscrew the light bulbs, but the switch remained on! What should I do?

Disassemble the switch and see what’s wrong with it, and repair if possible. Or just replace it.

Tell me this is the problem, I changed the spotlight, mistakenly set it to 12 V instead of 220 V, when I turned it on, the lamp exploded, and the switch is always on. and the light from the switch does not turn off. (When pressed, it returns back to on). How to treat?!)

Same problem. How did you decide?

Good afternoon! My daughters were playing with a parrot, suddenly everything went out.. The plugs were knocked out.. We turned on everything, but the light in the children's room does not turn on.. Tell me how to fix it!

Hello! You need to disassemble the switch, look at its contacts, maybe they are stuck. As a last resort, replace it with a new one. You can start by deliberately removing the switch in another room, replacing it with the one with the problem, and if the problem is solved, then buy a new light switch.

Kind. Single-key switch in the bathroom with indicator. 4 ice lamps and a fan are connected. It worked for a year without problems. But one day I unintentionally hit the switch with static electricity with my hand. And that's it, the 4 ice lamps are on constantly, and the fan is on only when this switch is turned on. What about him? Thank you.

I have a similar problem. When the light was turned on, something banged. The light went out, the shield on the distributor was knocked out. I looked at the light bulb - it was burned out. I tried to change it - it was on, but now the light does not turn off. I don’t understand what the problem is, something with the wiring or the switch. I'm afraid that the walls won't have to be hammered, only the renovations have been done, the wiring is all new.

First, try removing the wires from the switch - the light will go out, which means the switch is stuck in the on position - it needs to be replaced.

Good afternoon We connected the web chandelier. When the switch is turned off, the chandelier still burns a little. What should I do?

The diode is on the switches!

I have a strange situation, I came out of the bathroom, turned off the light, and the light started blinking, almost like welding, I clicked the switch, in 2 positions, the welding stopped, but the lamp was still on in both positions of the switch. I pull out the wire responsible for this particular lamp from the 2-toggle switch with LED, the light goes out. I decide to install a new switch, the same one, but a new one and a slightly different color, a 1 in 1 situation. The left button in the corridor turns on the light, but the second button, which should turn on/off the light in the bathroom, does not respond to switching. The LEDs in the switch are both lit normally, not blinking, the right one is only dimmer, but that’s the quality of the workmanship. The switch - Double one way switch - illuminated from Lezard, can be found on Google right away.

Let's look at how to change a light switch: necessary tools

In everyday life, it often happens that suddenly, when we turn it on, we realize that the room light switch stops functioning. Some, realizing that the device is broken, immediately run for an electrician. However, it is not at all difficult to repair or replace a faulty device yourself. You need to try to do it yourself at least once, and you will immediately have the relevant experience.

Option #1

Check circuit breakers. Circuit breakers are protective shutdown devices (circuit breakers, plugs, RCDs, differential circuit breakers, switches) that are located in the electrical panel in your apartment or entrance, and they turn off under certain conditions (overloads, leaks, short circuits). There are several types of machines, and sometimes it’s difficult for an inexperienced user to understand them. If you don’t know what they look like and where they are, look at the pictures!

You found machines, what to do next? How to understand where yours is, where it’s not, whether it’s on or off. With modern machines or RCDs, everything is clear - the toggle switch on them falls down (there are cases when machines are installed upside down, look carefully at the inscriptions). Here you can easily calculate your machine in the dashboard. Carefully, with one hand, without touching other wires and parts of the electrical panel, turn on the machine. Everything is fine? You don’t have to read any further and like and repost the article.

Option 5

(The saddest) You have traffic jams. For experienced electricians, real tears come to their eyes when they see traffic jams. Soviet-style traffic jams are the tears of an electrician. Replacing a plug with an automatic one should not take more than 20 minutes from a professional, please note! In your case (there is no electrician nearby), it is better to change the plugs for new ones, since they usually just burn out. (If you have new plugs, just turn on the button on them). Before changing or turning them on, it is necessary to eliminate the cause of the plug burnout, using tip No. 2.

In the very near future, we will draw this algorithm in the form of infographics. A convenient and understandable picture that you can print and hang in your home or office, or give to friends and family. If something doesn’t work out for you, or you have deeper questions, please contact us by phone. We work around the clock, without weekends and holidays. Thank you!

Home light switch repair

Before starting work, turn off the power supply at the distribution panel. To do this, you need to turn off the plugs on the shield, that is, press the big button if the shield is Soviet-style. If the shield is new, move it from the “on” position. to the "off" position.

There are many more useful tips on household repairs on our website. The article under the title will tell you how to fix this whimsical device

What to do if the faucet is leaking? Find repair instructions on our website at the following link:

Tips on how to visit our website

You will need the following tools:

indicator screwdriver;
jar for parts;
regular screwdriver;
felt-tip pen;
insulating tape;
small skin (fine-grained).

Contact us and you will receive:

Guarantee

1 year warranty on all work carried out, but only when using high-quality materials or purchased from us

Discounts

Discounts on next orders for you and your friends. There are also discounts depending on the volume of work

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Prompt round-the-clock service by a professional electrician is what we do. Read and write reviews about our work

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Comments and reviews (9)

I wonder why none of the """ electricians""" asked a basic question? Does the switch you are using have a backlight? 100% yes. And the circuit of this backlight lights the lamp, usually an LED one. Change the lamp, or change the switch.

The switch is not positioned correctly; the phase wire must break.

Cossack

Sorry, I re-read the article again, if it fails after a few days, then it’s the switch!

Cossack

Maybe, of course, there is a short circuit in the junction box before the switch...

Olesya

It’s simple - remove the switch, connect it to each other, does the lamp light up? open it does not light up, it means the problem is in the switch.

Valentine

For me too, when I turn off the power, the “light” doesn’t come on. I turn on the power and the lighting works. And just like that, damn it all the time. What an idiot you have to be not to figure out the switch. Although... I also sometimes have a question, how could my Tanka, and all the other madams like her, get a university diploma? But it gets ridiculous, he pours water into a barrel at the dacha, turns off the pump, and after a while announces that the barrel is full of holes. Of course it’s my fault, because the non-return valve is clogged. But she has zero idea that the hose is in the barrel. But what to do? Favorite person.

Ingvor

Tanya, change the replacement switch, the contact group is stuck.

Sergey

Change the switch and make sure that it is in phase and the “fairy tale” will disappear.

Makarov Dmitry (Expert)

As I understand it, when this switch is turned on, the picture does not change at all - the light, just like when it was off, continues to burn.

There are several options here:

The key does not interact with the contact group - in different models, the elements are fastened differently, so the latches or fasteners could break and the key began to work independently of the contacts;
Overlapping or sticking contacts - a poorly secured conductor or low-quality structural elements can bypass the switch itself directly or it could be soldered to the contacts, which led to the situation you described.
The transfer of potential from any wire bypassing the switch is most typical in the case when you drilled into the walls to hang a picture, photo or secure furniture. If two wires were accidentally damaged, which created a potential transition from one wire to another, then the lamp will light without turning on the switch. Quite rarely, but similar processes can occur without your intervention, then the insulation is broken and a fully functional switch does not affect the lighting at all.

These are the most likely reasons for the situation that has developed with your switch. But in practice, any situation can happen, so I recommend that you disassemble the switch and carefully inspect all its elements. Before disassembling or dismantling, be sure to turn off the voltage; it is advisable to check its absence on the line you need and in the switch.

Source

Light switch repair: causes of breakdowns

Before disassembling the switch mechanism, you need to find the core through which the phase is connected to the switch. Voltage is applied to it, and the indicator checks the presence of current on both contacts. Then the key must be turned off to another position and the test is repeated.

The device is inspected for the quality of contacts. If any of them are oxidized or burned out, they are cleaned. Melted contacts indicate that the switch cannot be repaired.

After this, you need to check the contacts at the places where the wires are attached and also clean them. Again, you need to check the strength of the supplied wires.

Why do switches in an apartment fail:

Increased humidity in the room, which often leads to oxidation of contacts or wires;
A poorly secured contact when installing a light switch and the device short-circuits;
Improper use of the device, in particular loading with visible defects (sparks, buzzes, crackles);
Exceeding the permissible voltage of electric current at the connections to the device;
Voltage drops when the device is turned on.

Usually, if the switch does not have a manufacturing defect, then it breaks down solely due to the direct or indirect fault of the user.