The phone can be turned on, but the screen is not displayed, what should I do?

1 Whether the mobile phone has been replaced with a non-original screen, it is recommended to replace the original screen.

3 Problems with the display and cables.

4 Problems with the motherboard.

In the third and fourth cases, it is recommended to go to the network engineer for inspection and maintenance.

Method 1: You can press and hold the power button for 15 seconds to restart the phone, if it is normal after booting, you can try to clean up the phone's memory to ensure that the background runs smoothly. If the screen is still black, you can send it to a professional repair shop for repair.

Method 3: If the phone still fails to turn on after multiple attempts, or the screen is still black after turning on, you can contact the local after-sales service for inspection and maintenance.

The reason for the black screen of the phone may be:

1. It may be because there is a vulnerability in the system, you need to wait for the system to update, or go to the after-sales office to return the system to the stable version.

2. It is also possible that the memory of the mobile phone occupies too much, the memory space is full, and the running software is too much and causes a crash.

3. The latest installed software and the system are incompatible and cause the phone to be black, just uninstall the software.

The phone can be turned on, but the screen is not displayed, what should I do?

Good morning. First of all, it is a great honor to have you and ask questions.

The phone you proposed turns on, but the screen doesn't show up. There are many reasons for this failure. The first aspect is to check if there is a problem with your phone's screen.

Well, it's time to replace the phone screen. Recall that your phone screen has been hit by water or external forces? If you don't go to school, it's a problem with the hardware of your phone.

There is also a problem, that is, the wiring between the mobile phone screen and the mobile phone motherboard. Both of his hardware have to be connected through a cable arrangement. Loose cable socket will also cause the mobile phone screen not to be displayed.

You can also take a look at the sound of the mobile phone, and whether the sound output can be used normally? There is no problem with the sound, and then the phone can be turned on normally. Then rule out the other faults.

That is to say, it is enough to detect the phone screen alone.

Check whether the mobile phone screen is faulty, and you can find a maintenance master to check the screen situation.

The screen will light up after the phone is turned on, but the reasons why the screen cannot be displayed are:

1. The boot line is abnormal: use an external power supply to supply power to the mobile phone, use the electric meter to detect whether the indication has changed, if there is no change, it is likely that the boot line is broken or the boot button is not in good contact.

2. The power supply circuit of the battery is abnormal: use the external interface to supply power to the mobile phone, see if it returns to normal when it is turned on, if it is normal, it is determined that the power supply circuit of the mobile phone is abnormal.

3. The IC of the mobile phone power supply is abnormal: test the test point of the peripheral circuit of the power supply IC according to the circuit schematic diagram to see whether the test value is normal.

4. The system clock and reset of the mobile phone are abnormal: you can use the dual total oscilloscope to detect the CPU power supply of the mobile phone to check whether the waveform in the reset is correct.

The phone screen is bright little by little.

Hello, the phone can be turned on, but the screen is not displayed, the solution is as follows:

The mobile phone can be turned on normally, and the screen does not have any display, which is caused by the failure of the screen or cable.

In this case, it is only recommended that the user bring the mobile phone, invoice, and warranty card to the local brand customer service for testing. Zen Chain.

When the customer service explains the situation, the engineer will detect the mobile phone to find out the cause of the failure and will congratulate the user.

If the mobile phone is under warranty and it is a natural fault, the after-sales service is responsible for the warranty.

If it is out of warranty or caused by a man-made fault, then you can only pay for repairs.

Summary. Hello dear!

1If you find that the mobile phone screen is not displayed, you should immediately check whether the mobile phone is still within the warranty period, if it is still there, it is recommended to take it for repair, this kind of situation is generally caused by the internal hardware is broken.

2.If you find that the mobile phone is not within the repair period, if you know a little about electronics, you can remove the back cover of the mobile phone, reconnect it according to the typesetting of the mobile phone, and try to see if it can be displayed.

The phone can be turned on, but the screen is not displayed, what should I do?

Hello dear! 1If you find that the screen of the mobile phone is not displayed, you should immediately take an empty shot to check whether the mobile phone is still within the warranty period, if it is still there, it is recommended to take it to Weidou for repair, this kind of situation is generally caused by the internal hardware is broken. 2.

If you find that the mobile phone is not in the maintenance period, if you know a little about electronics, you can remove the back cover of the mobile phone, and reconnect it according to the typesetting of the mobile phone, and try to see if it can be displayed. 3.If you don't understand, you can flash the phone, and you can ** rom package that matches the type of mobile phone, and it is not recommended to go to the mobile phone store to let a professional person help you.

The mobile phone boot screen cannot be displayed normally, which is mostly caused by hardware failures such as mobile phone screen chatter, cable arrangement, etc. In this case, it can only be recommended that the user send the mobile phone to the brand customer service, and then inform the customer service of the abnormal situation of the mobile phone, and then the engineer will detect the mobile phone in detail. The after-sales engineer will find out the problem that the mobile phone is not in Lu Chang, if the mobile phone is in warranty and it is a natural fault, the after-sales service is responsible for the warranty.

If it is out of warranty or caused by a man-made fault, then you can only pay for repairs.

Hope mine can help you!

See if it's a screen problem, a cable problem, or a cable dock problem.

Hello, the phone can be turned on, the screen does not show that the cable is not broken, or the mobile phone screen, or the motherboard is broken, only through detection can we know that the mobile phone is because of the black screen caused by the failure there.

The mobile phone cable is connected to the motherboard and the mobile phone screen, generally when there is a problem, the mobile phone will appear blurred screen, no display, keyboard failure, etc., such faults need to be checked on the mobile phone cable, to determine whether the cable is because of loose contacts, or because of fractures and other problems, generally disassemble the mobile phone to replace the problem can solve the problem.

If the problem with the motherboard of the mobile phone does not display, then you have to use a multimeter.

Test whether the resistance value at the connection and the IC power supply of the screen are normal, and the LED light behind the screen.

It is a high-voltage power supply, and the voltage of the mobile phone's battery cannot meet its highlight, so the boost IC. It's not that there is no display, but that you can't see it without a backlight. This also requires a professional to carry out an overhaul to confirm.

If you know how to do it yourself, then you can find the mobile phone drawings by yourself, and then test the parts and weld them with a soldering iron.

Just try to repair it.

In fact, the easiest way is to turn off the phone and stand for about ten minutes, and then turn on the phone to see if it is normal, if you still can't light up the screen, then press and hold the phone power button + volume key according to the way the phone enters the restoration system to enter the operation interface, if this can be displayed, then it is most likely not a hardware problem of the mobile phone, but a system problem, the solution is very simple, that is, continue to operate and restore the factory settings.

If you are using a vivo phone, the device vibrates when you press the power button to turn on or force restart, and the screen will not be displayed.

If the device vibrates but the screen is still black, it is more likely that the screen is faulty, please bring the device to the service center for further maintenance.

Force Restart Method:

Tablet, FunTouch OS and subsequent models: Press and hold the "Power button" + "Volume Down button" at the same time for more than 10 seconds;

Press and hold the top round button for more than 10 seconds to force restart the phone (applicable to NEX 3 NEX 3S);

FunTouch OS previous models: Press and hold the "Power Button" for more than 12 seconds.

It may be that the inner screen is damaged, or the lead is broken. It is recommended to go to a service center for testing.

It may be that the inner screen is damaged, or the lead is broken.

Summary. What to do if the phone screen does not display.

1. The phone screen is black due to incompatibility or bugs, which is generally an abnormality after the phone has installed an application that is incompatible with the system or the application has been updated to an abnormality, just force quit the application and uninstall the application to restore the screen display (the smartphone can slide back to the main page of the system from the bottom of the screen and then delete it).

2. In addition to the application itself, the black screen caused by system bugs also often occurs. You can upgrade your phone to the latest version by going to System Settings, System Update, or downgrading your phone to a stable old version using the flashing package.

3. If the mobile phone is loaded with an overloaded application, the mobile phone may have a black screen caused by untimely response or stop responding, and it can only be restored by pressing and holding the power button of the mobile phone to restart (in this case, it is recommended to change the mobile phone to a new mobile phone to ensure that the application can run smoothly).

4. If the above reasons are ruled out and the phone screen does not respond after restarting, it means that the screen has poor cable contact and the screen is damaged.

The phone can be turned on, but the screen is not displayed, what should I do?

What to do if the phone screen does not display. 1. The phone screen is black due to incompatibility or bugs, which is generally an abnormality after the phone has installed an application that is incompatible with the system or the application has been updated to an abnormality, just force quit the application and uninstall the application to restore the screen display (the smartphone can slide back to the main page of the system from the bottom of the screen and then delete it). 2. In addition to the application itself, the black screen caused by system bugs also often occurs.

You can upgrade your phone to the latest version by going to System Settings, System Update, or downgrading your phone to a stable old version using the flashing package. 3. The lack of performance of the mobile phone leads to the black screen of the mobile phone, if the mobile phone is loaded with an overloaded application, the mobile phone may appear to be blind due to the untimely response or stop responding, which machine black screen, generally can only be restored by pressing and holding the mobile phone power and restarting the key (in this case, it is recommended to change the mobile phone to ensure that the application can run smoothly). 4. If the above reasons are ruled out and the mobile phone screen does not respond after restarting, it means that the screen has poor wire contact and the screen is damaged.

Hope the above answers can help you! Thanks for your support!