What is the reason why the lights suddenly don t come on, and suddenly the lights don t come on?

The reason why the bulb suddenly does not light up may be that the bulb filament is burned out, or it may be a faulty wiring.

The bulb of ordinary round filament can be seen to be staggered or dropped by the filament inside, and the energy-saving lamp can generally be seen to be black at both ends, like this case, you have to buy a new bulb to replace. If you find that the bulb is okay through visual inspection, first disconnect the power supply and check whether the lamp holder is loose, there was a long fluorescent lamp in my hometown before.

The lampholder has a starter, sometimes the power is not on or flashes off, generally through the starter.

The problem is solved after reinstallation.

If the light bulb doesn't light up and the appliances don't work, there is a possibility that the circuit will be open.

Yes, you can use a voltage tester to check whether the circuit has current through, of course, it may be a short circuit, first disconnect the electrical appliances and switches, and turn the fuse of the live wire.

Take it off, then find a 220V bulb to connect it, turn on the switch, and find that the bulb is shining normally, you can judge that there is a short circuit, if the bulb is a little dark, the circuit is normal.

If the energized line fails, it is generally necessary to check whether the connection of the line is in good contact, and whether the wire is aging and broken. If the bulb does not light up, the leakage protector.

If there is no tripping, the line should be open, disconnect the power supply, and use a multimeter.

Focus on checking the neutral line and the live line. If the leakage protector trips, it is likely that there is a short circuit.

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The reason why the bulb does not light up: it may be that the lamp is damaged, the line is faulty, the switch control line has a broken point, and the switch is faulty. Burning out of the filament of the lamp will cause the lamp to not light up.

Solution: 1. First of all, it depends on the incandescent lamp or energy-saving lamp you use at home, if it is an incandescent lamp, it is caused by poor contact, if it is an energy-saving lamp, it may be caused by the unstable voltage in your home, mainly because the voltage is too low, or the contact of the line is poor, if it is not a normal power outage, the cause of the line should be found and dealt with.

2. Disassemble the bulb and eliminate the short-circuit factor; The switch can't really be closed, change it to a new one; The wire inside the plastic is broken, replace the wire.

3. You can swap the unlit lamp with the bright lamp to judge whether the filament is burned out.

4. Replace the bulb.

The lights suddenly went on for the following reasons:1. Check whether there is no electricity bill and pay in time.

2. Check the circuit fault situation, whether the main switch or the line of the light has tripped.

The rated power of the bulb.

With the rated voltage is too high, causing the circuit to trip the light does not light up.

3. Check the tungsten wire in the lamp, because this is the more common reason why the lamp is not lit.

In the above situations, you can solve the situation that the light suddenly does not turn on.

1 All 01 ceilings are not lit, first consider the problem of the lamp, the lamp is burned, broken, of course it will not be lit! Try a different lamp.

02 If it is useless to replace the lamp, then consider the problem of the switch, check the switch, see if there is no contact, or leakage, if there is, repair the switch.

03 Then you have to consider whether it is a problem with the contact head, try it with an electric pen to see if the contact head has electricity, if there is no electricity, the contact head is broken, just replace it with a new contact head.

04 If the above situation is good, it is a problem with the ballast, check whether the ballast is scorched, if you see that the ballast has scorched traces, then change the ballast.

The light suddenly does not light up may be because of the problem of the circuit, resulting in the power can not be transmitted normally, or it may be because the light bulb is broken, so the light suddenly does not light up, if you want to know what the reason is, you still need to see if other electrical appliances are in normal use, if it is normal, then the bulb is broken. aqui te amo。

If the lights at home suddenly do not turn on, it may be due to the circuit open, the circuit is short-circuited, the power is too large and the line is overloaded, and the circuit itself is connected incorrectly and the fault is caused. In view of the above situation, we can use an electric pen to detect the circuit, and then repair it according to the situation. Some situations require professional operation, and a person should not try it easily at home to prevent electric shock.

Call the workers to repair it