What to do if the screen keeps going black after factory reset?

Mobile phone memory problem: Under normal circumstances, when the mobile phone stores too many things, many friends can feel that the mobile phone is running too slowly, and when their mobile phone is occupied by 80% of the memory that can be driven, there may be a crash and a black screen.

The problem of the second contact of the black screen of the mobile phone: This is the contact of the mobile phone screen is loose, which is not a big problem, but it can directly lead to the black screen of the mobile phone, which is difficult to find and can only be found after a lot of tests, which is generally caused by the mobile phone being bumped.

Mobile phone black screen three battery problem: It is common for many mobile phones to have a black screen after using it for a long time, the main reason is that the effective use time of the mobile phone battery is 1 year, or it is three years but there is a problem in one year, and excessive use leads to the aging of the mobile phone's battery and insufficient voltage.

The problem of four conflicts of the black screen of mobile phones: There are many applications for smartphones nowadays, but there are some software that are born with conflicts, which can also lead to black screens, so the black screen after installing a lot of software is basically this reason.

Mobile phone black screen five flashing problem: many people are keen to brush the phone, with a better system, in fact, some systems of mobile phones are not very supportive, and some are not complete flashing, resulting in the future when using the inevitable often black screen.

Solution: 1: Check whether the circuit board and the battery contact are not in good contact due to the elasticity of the contact is not enough, or the copper skin on the circuit board is dirty or rusty, and use the corresponding methods to solve the problem (it is possible to solder the battery contact directly on the circuit board).

2.Uninstall related software, clean up memory junk, and check for viruses.

3.Factory reset.

4.Check the phone and configuration, the configuration is too low and the screen in the game is black, you can change the phone.

I really hope it can help you, hope!

Wait, wait for the phone to turn on, are you sure the phone is still charged?

The power supply is abnormal, the power cord is damaged, or the power outlet is outlet.

If it is damaged, the power supply will not be able to be supplied normally, and the black screen will appear.

At this time, you can check whether the indicator light at the bottom of the TV screen is normal. Since the signal causes a black screen, you only need to switch the TV input signal back to the correct input source on the remote control or in the input settings. 1. The power supply is normal, and there may be a problem with the circuit driving the backlight.

The detection method is to connect the monitor to the main unit for a boot check, close to the screen and take a closer look. If you see a very gloomy image, it proves that the signal processing part of the AD driver board is functioning properly. 2. The circuit part of the AD board that controls the switch of the high-voltage board is faulty, resulting in the inability to output high-level frontal start.

Controls the high-voltage board switch pins. Multimeter.

The negative probe is grounded, and the positive probe is connected to the control output pin. If it's normal, you can see the level change. You can also use a relatively simple method to judge whether the high-voltage board is good or not, that is, first find the wire that controls the switch of the high-voltage board, and directly connect it to the 5V electric banquet to dismantle the voltage.

If the high-voltage plate is not faulty, the backlight can generally be lit. 3. There is also a situation that will cause a black screen, that is, the screen backlight is broken. But it's unlikely that the backlights of two lights and four lights will break at the same time.

If one of the lights is broken, it will also cause a black screen, but it will not behave the same as the previous black screen failure. This is because some high-voltage plates are protected against load imbalance. If a light is broken, the high-voltage board will enter the load imbalance protection state after starting, and it will become a black screen after flashing once.