As soon as the LCD TV was turned on, there was a black screen in the middle, and it slowly went comp

1. This situation can be basically concluded to be caused by the hardware failure of the LCD TV, mainly including the failure of the LCD screen (logic board, driver board failure), screen line failure, internal display circuit failure, motherboard chip or other component failure, etc.

2. Solution: Because it is caused by hardware failure, non-professional users are advised not to disassemble and repair the machine without permission, and should contact the after-sales service of the TV in time to conduct a comprehensive inspection and maintenance of the TV to solve the problem.

I bought a 47-inch miscellaneous LCD TV on the Internet, and it was a blue screen when it was turned on, and the screen went black when it flashed, although there was sound, but there was no image. After contacting the after-sales service, I was asked to send it over, and when I contacted them, they said they tried it, and there was no problem. I highlighted the problem, but they said there was still no problem, so they sent it to me, and I unboxed it and found that they didn't send my remote control power cord and manual.

After waiting for a few days, it was finally sent today, and I hurried to test the machine, and now it's good, and even the sound that there used to be is gone. The boot still flashed a blue screen, and it was silent, the previous remote control was Chinese, the power switch still functioned, and the current remote control could not turn off the power supply. Please give us advice from knowledgeable friends.

Is it damp? Other functions of the TV are normal,It's black when it's turned on,It's black when the station is turned on。

Problems with the monitor, look at the driver of the graphics card, and the monitor.

If it's dark, it's black, it's broken.

Most likely in accordance with the questions of the board. The driver board LCD model looks like it's going to be in a hurry.

A black screen appears in the middle of the TV screen.

Under normal circumstances,Consider it caused by problems with the signal source or hardware of the TV,You can also check the wiring,It should be noted that,If you can't find the cause of the fault accurately,Or you are not sure,You need to contact the after-sales service of the TV or other professionals for cause analysis and maintenance。 The following are the specific fault causes and corresponding solutions: 1. If there is a problem with the signal source or program source of the TV, which causes a black shadow, you can check whether the connection line of the signal source has poor contact, and solve it by replacing the connection line or the contact searcher; If it is a problem with the program source, you can switch other channels to solve it; 2. If it is confirmed that it is not a problem with the signal source or program source, it should be caused by a problem with the hardware of the TV, such as display failure, internal circuit failure, motherboard chip failure, etc., which needs to be solved by contacting the after-sales service of the TV for maintenance; 3. Wipe it with a dry towel to see if it is caused by external causes; 4、Check the TV viewer's bright frequency option,Check whether the mode corresponds,Switch to** or the corresponding mode to talk about it; 5、If the above are checked, there is no problem, it is recommended to use another TV to monitor whether the set-top box is normal,Or test with *** and other equipment,If the set-top box is normal, please call the TV manufacturer's service**consultation,If the set-top box is not normal, please call radio and television maintenance**Report for repair。

If you don't have a set-top box, follow the instructions to check if the TV has the option to turn off the screen.

First, the backlight plate problem. The power supply of the TV is normal,The panel buttons are also normal,The indicator light of the TV is also flashing,But when the TV is suddenly black, this means that the backlight plate of the TV may not be lit。

You can connect the monitor to the host for boot check,At this time,The reason for the sudden black screen of the TV may be the failure of the high-voltage board,The failure of the high-voltage board is generally due to the fact that the safety is burned or there is a problem with the switch chip。

Solution: The freshness of the high-voltage plate is burned off, and you need to buy a new insurance to replace it, if there is a problem with the chip of the switch, you must ask the commissioner to be responsible for repairing the chip of the switch.

Second, the power supply problem. The TV screen suddenly went black, and we also had to consider whether there was a problem with the power supply circuit of the TV,The phenomenon at this time is that the buttons of the panel do not have any response,The indicator light of the TV is not on。

When checking the power supply, first check whether the voltage of the power supply is too low, then you can use the meter to detect, and at the same time check the input stage of the power supply circuit to observe whether the voltage of 12V is converted to a voltage of 5V, which is the most common problem that causes the power supply to suddenly go black.

Solution: The reason why the TV screen suddenly goes black is that there is a voltage problem, so you need to prepare a voltage regulator at home.

Ensure the stability of the TV power supply voltage. If there is a problem with the input stage of the power supply circuit,The input stage of the power supply circuit should be adjusted,Ensure that the voltage input to the TV is normal。

This answer is suitable for Hisense75E3D、Huawei Smart Screen。

S Pro 65 brand TV model.

Summary. The reason is that there are devices inside the TV that have poor contact or that the devices are working unsteadily. 1. The reasons and detection methods are as follows:

1. It is mainly because of the poor contact caused by the virtual welding of internal circuits or components. Therefore, when the circuit is not on, the screen will be black, and if you shoot it to make the circuit turn on for a short time, the picture will be restored. 2. When the TV is powered on, it will generate heat, and it will cool down after it is turned off.

In such a long-term cycle, under the action of thermal expansion and cold contraction, some high-power devices on the circuit board are also seriously heated, and the solder feet are prone to desoldering, such as pad cracks. That is, it is easy to have the problem of circuit on-time and time-out; 3. This year, there is a lot of rain and humid air, which will aggravate oxidation and aggravate the failure for the parts where the pad cracks have occurred. When the TV screen is black, you can tap the chassis to vibrate, that is, knock on the mountain and shock the tiger detection method, if the screen can return to normal, this is the reason.

It is also easier to solve the problem, remove the circuit board, use a magnifying glass to find out the solder joint, and fill the tin; 4. If the shock is invalid, it is mostly because the performance of a device has deteriorated and the work is unstable. Professional maintenance is required, and it is appropriate to send it for repair or customer service for door-to-door maintenance.

What is the problem with the TV screen going black and then lighting up again?

The reason is that there are devices inside the TV that have poor contact or trapped parts and work unstable. 1. The reasons and detection methods are as follows: 1. It is mainly due to the poor contact caused by the virtual welding of internal circuits or components.

Therefore, when the circuit is not connected, the screen will be black, and the picture will be restored if you take a picture to make the circuit briefly connect to the first pass. 2. When the TV is powered on, it will generate heat, and it will cool down after it is turned off. In such a long-term cycle, under the action of thermal expansion and cold contraction, some high-power devices on the circuit board are also seriously heated, and the solder feet are prone to desoldering, such as pad cracks.

That is, it is easy to have the problem of interrupting the circuit when the circuit is on; 3. This year, there is a lot of rain and humid air, which will aggravate oxidation and aggravate the failure for the parts where the pad cracks have occurred. When the TV screen is black, you can tap the chassis to vibrate, that is, knock on the mountain and shock the tiger detection method, if the screen can return to normal, this is the reason. It is also easier to solve the problem, remove the circuit board, use a magnifying glass to find out the solder joint, and fill the tin; 4. If the shock is invalid, it is mostly because the performance of a device has deteriorated and the work is unstable.

Professional maintenance is required, and it is appropriate to send it for repair or customer service for door-to-door maintenance.

5. The solution is: disassemble the TV set and focus on checking whether the switch circuit has virtual welding; The second is to check whether the parts on the motherboard are faulty or virtual soldering, check them one by one, and re-weld the virtual solder joints; If there is a failure of the parts of the hall, you can use the parts of the same model to replace the problem.

Hope it helps, do you have any other questions? If you're satisfied, you can give me a Zhaochangdan Five Clans Disturbing Star Praise x09 Your praise is the driving force for us to move forward. Have a great day!

Hello, I think,1、In this case, it can be concluded that it is caused by the hardware failure of the LCD TV concealment machine,Mainly including LCD screen failure (logic board, drive chain board failure)、Screen line failure、Internal display circuit failure、Motherboard chip or other component failure.

2. Solve the judgment method: Because it is caused by hardware failure, it is recommended that non-slag professional users do not disassemble the machine for maintenance without permission, and should contact the after-sales service of the TV in time to conduct a comprehensive inspection and maintenance of the TV to solve the problem. 