The door of the range hood that opens the door of the electric door cannot be opened, which componen

I don't understand, but I can't ask Xi Dadong, if you're sick.

First of all, you must be clear about why your phone does not turn on.

There are two kinds of problems with the phone not turning on: hardware or software, and system. If there is an external force, such as being dropped, pressed, flooded, overheated, etc., it must be a hardware problem.

If you have some software, delete some system files, or can't boot after flashing, this is generally a software or system problem. Understand the problem** problem and solve it. There are two situations in which the phone does not turn on, and the solutions are as follows.

The phone is on and responds but can't be turned on normally:

This is the most common situation where your phone won't turn on. When the phone is turned on, there is a vibration and sound, but the screen is dark; After the mobile phone is turned on, it has been stuck in the logo interface and cannot enter the operation interface; There is also the fact that the mobile phone can enter the normal interface but there is no response when you click on anything, etc., which is the most common manifestation of abnormal boot.

First things first: check your phone's battery. The reaction when the phone is turned on proves that the battery is still working, and in addition to the aging of the battery and water ingress, the battery problem can be ruled out.

If the battery is aging, you can try it with the same type of battery, and if it can be turned on normally, then replace it with a battery; If it is water, turn on the device when the water has not yet dried, it will cause a short circuit in the battery, and the phone will only run for a while, and the battery will be damaged due to a short circuit, you can wait for a day or two for the phone to completely dry and change the battery.

Then: check your phone screen. Under the destruction of external forces, the screen fails, especially some mobile phones themselves are soldered, which is particularly prone to "fake not booting" caused by the screen.

Although only a slight fall, but the mobile phone screen is no longer responsive due to the disconnection of the line, at this time you can tap the phone, a few more shots, if the mobile phone screen will flash from time to time, this proves that the mobile phone is only a certain line of problems, you can disassemble the machine after finding the disconnected solder joint to re-weld, or go to the repair point for repair. Especially when the phone vibrates and sounds normally when it is turned on, but the screen does not respond. This is especially the case for consideration.

Again: Check if you can enter recovery, consider flashing. Both of the above are hardware problems, but the phone can't be turned on completely normally, because there are many software or system problems.

If the phone is just stuck in the logo screen or can not be operated when booted into the interface, then check whether the phone can enter recovery, press and hold the power button + volume down key, if the phone enters the following screen, and can move the cursor by moving the volume + and - keys of the mobile phone, then the phone can be solved by flashing.

1.There is no power in the power supply, and the voltage can be normal;

2.If the internal line is wrongly connected, re-wire it according to the circuit schematic diagram;

3.Switch failure, replace switch;

4.If the main control board is faulty, replace the main control board (such as fuse or transformer failure, etc.) (for electronic or touch screen switches).

5.For range hoods with binding posts, if the wiring on the binding post is not good, such as the screws that fix the wiring are pressed to the rubber outside;

6.The fuse tube is burned out or has poor contact;

7.For plug-in wiring range hoods, plug-ins may fall off due to long-distance transportation

If there is no sound, it may be that the switch button is broken, if there is, check whether the power connector is linked. If you leave it on overnight, the board may be broken. It is recommended not to do it yourself to find a maintenance master for repair.

**It will be different in different places, but the problem should not be too big, generally around 100.

Range hood, also known as range hood, is a kitchen appliance that purifies the kitchen environment. It is installed in the kitchen to save energy in a healthy way.

Above the stove of the range hood, the waste burned by the stove and the harmful oil smoke generated in the cooking process can be quickly extracted and discharged outdoor, reducing pollution, purifying the air, and has the safety guarantee effect of anti-poison and explosion-proof. The range hood needs to be cleaned regularly, and simple cleaning can not deal with the oil stains, and the range hood must be cleaned with a professional cleaning agent.

1.There is no power in the power supply, and the voltage can be normal;

2.If the internal line is wrongly connected, re-wire it according to the circuit schematic diagram;

3.Switch failure, replace switch;

4.If the main control board is faulty, replace the main control board (such as fuse or transformer failure, etc.) (for electronic or touch screen switches).

5.For range hoods with binding posts, if the wiring on the binding post is not good, such as the screws that fix the wiring are pressed to the rubber outside;

6.The fuse tube is burned out or has poor contact;

7.For plug-in wiring range hoods, plug-ins may fall off due to long-distance transportation