Excuse me, what is the black screen around TCL TV?

What is the black screen on the left and right of TCL TV?

Reason 1:

There is a phenomenon that there is sound but no image on the TV, but the setting menu of the TV can be displayed on the TV, so the problem of the TV may be that there is a problem in the separation of sound and video playback.

Solution:

First, test the sound separation. If there is a problem with the sound separation, you need to ask a professional to repair it at home, and repair it yourself. Improper operation will lead to your TV not only no picture, but also no sound.

reason 2:

check whether there is high-voltage sound when the TV is turned on. If there is high-voltage sound, it means that the circuit of the TV is basically normal. If there is no high-voltage sound, it may be that the circuit of the TV is not started.

Solution:

Before the TV circuit is started, use the human body induction signal injection method to observe whether a bright line on the horizontal line jumps or widens. If there is such a phenomenon, it will show that the circuit output works normally, and the fault occurs in the circuit of field vibration and field output signal transmission. Letv has a black screen, but there is sound. What's the matter?

there is a sound when the machine is turned on, but the display screen is not bright. This situation can show that the power supply, that is, sound and image processing, basically works normally, which is mainly caused by the wrong power supply of the screen lamp tube. If this problem occurs, you can first check whether the power supply supplies 12V to the high-voltage board, and if not, just check whether the power supply of L53 is normal. In this model, there are many problems caused by L53 open circuit. If

the output voltage of L53 is normal and the screen is still not bright, then the problem of booster board should be considered. You can look at it with a new booster board. Generally speaking, the chance of screen failure is very small. For example, if a new booster board is put on, and the power supply control signal is normal and the screen is still not bright, then the screen is broken. What is the total black screen of the computer?

the temperature is high, so what's the matter with the computer suddenly going black?

check the power supply. Is the power cord not plugged in properly, or the voltage is unstable or something? What's your electricity environment like? If the temperature is too low, the computer won't work. See if all the components in your computer are well wired.

The CPU cooling fan, clean it up, and see if there is poor contact or dust in it. Heat dissipation of cpu is also very important.

You open the side panel of the chassis, and unplug all the memory sticks, if there are two, leave one, independent display card, independent sound card, etc. (you are a cpu integrated display card, right?), do a minimization test, and keep the cpu, one memory stick, one hard disk, monitor and power supply. If there is no problem with these devices and they can be brought up, it means that these hardware are ok.

If you have two memory sticks, switch them back and forth to see if they all work.

See if there are any settings in your bios. Boot F1 and enter the Bios to restore the default values. If these are not enough. What is it that the computer will go black when it is stuck?

solution to the black screen of the monitor:

1. If the monitor is not used for a long time, the monitor will automatically switch to the sleep energy-saving mode and the screen will be black.

solution: take win7 system as an example.

(1) Right-click a blank space on the desktop and select Personalization from the menu to open the Personalization Settings dialog box

(2) Click the red box in the above picture to select Screen Saver to enter the Screen Saver Settings dialog box.

(3) Set the screen saver to "None". And click "Change power setting" to enter the power setting dialog box.

(4) click "change plan" to enter the change settings dialog box.

(5) In the blue box, click the drop-down triangle, select Never, and then "Save Changes" to exit.

after setting, the monitor will no longer automatically blank.

second, the display failure leads to a black screen.

on the internal power board of the display, the capacitor of the power supply and output part is aging, leaking, bulging and invalid. When the display is just turned on, the power supply is normal in a short time because the capacitor is not completely dead, so it can display normally. After working for a period of time, the power supply is seriously insufficient, which causes the backlight of the LCD to go out, leading to the black screen of the display.

solution: send it to a professional monitor repair point, and even worse, damage the components, and the cost is about 3-5 yuan.

third, the signal line of the display is loose or poorly contacted, which causes the video signal sent to the display to be intermittent, resulting in the black screen of the display.

solution: re-plug, install and fix the monitor signal cable. If the fault persists, the signal line test can be replaced.

4. The display card is out of order and unstable in execution, resulting in a black screen on the display.

Solution:

1. Test after updating the display card driver. If the fault remains, directly replace the display card for testing.

note: if the integrated display card is used, a separate display card can be installed for testing. Or directly replace the motherboard with integrated display card for testing.

5. The performance of the motherboard is faulty, and the operation is unstable, resulting in the black screen of the monitor. Solution: directly replace the motherboard for testing.

what's the matter with a black screen in the upper left corner of the 32-inch TcL TV?

hello, dear users.

Check whether the phenomenon lamp tube of the TV set emits light. If the phenomenon lamp tube emits light, slowly adjust the knob of the grid curtain and observe the screen at the same time. There will be three conditions on the screen:

1. There is no change in the screen, which indicates that the voltage at the cathode of the phenomenon lamp tube grid is abnormal;

2, a horizontal line, in this case, besides the open circuit of the field deflection coil or the virtual welding of the solder joint and the virtual welding of the output block, the external field oscillation and the field transmission signal will also cause the fault.

3. A bright vertical line is the phenomenon that the deflection coil is open and the solder joint has virtual welding.

solution: the voltage of the image tube is abnormal. First, check whether the power supply of 2v is abnormal. If the power supply voltage is abnormal, you need to buy a voltage regulator. In the case of virtual welding, it is necessary to re-weld the virtual welding place of the line and adjust the open circuit of the line. What is the black screen when Huawei honors 6xQQ?

Dear users, if there is a black screen, take it to professional maintenance personnel to check the problem. They can help you repair it. Don't try to repair it yourself. It is very likely that you can't put it back after disassembling it. China Telecom provides the best network communication services, such as exchanging old friends for new ones, cashing in the net age, free experience of 1 Mbps broadband, ultra-clear TV iTV, and telecom activities can be inquired directly through the business hall. What's the matter with the black screen when the mobile phone logs on qq?

when did you buy the mobile phone? It is probably a quality problem. I suggest you take it to the dealer. If you just bought it, you should change the machine. What's wrong with it?

Different from the monitor, the color TV screen has no display, which is not called "black screen", but is generally called "no image, no grating". It is also necessary to distinguish whether there is audio and whether the power indicator light is on. For color TV, it is necessary to distinguish between CRT/LCD/LED/ plasma, rear projection, etc. The same fault phenomenon is reflected in different kinds of TV sets, and the causes and parts of the fault are different. Even for the same kind of TV, there are many reasons for "no image and no grating", which is not a good example. Tell a joke that everyone is familiar with, please don't mind: it's an electric fan from a distance, but it's an electric fan from a close look. Why don't you turn? A: Not an electric fan. No, it's just a fan. Answer: There is no electricity. No, it's electrified. Ask why the electric fan doesn't turn when it is electrified, and say that the electric fan is broken. This is a typical joke, but after careful study, what is the reason why the electric fan is broken? Too many problems: poor plug contact, open power cord, fuse blown, mechanical timer contact failure, electronic control board failure, motor lead open circuit, open starting capacitor or serious capacity shortage, motor starting coil burned open circuit, shaft and shaft sleeve rusted and locked, fan blade resisted by hard objects and so on. There are so many reasons why a simple electric fan doesn't turn. The circuit of color TV is much more complicated than that of electric fan, and there are even more reasons for the failure of "no picture and no light". It is not difficult to solve this kind of fault, but it is necessary to have a specific model, judge the approximate fault range according to "whether there is sound", and then carry out necessary inspections, so it is not difficult to find out the fault position and eliminate the fault. What is the black screen of Sony Ericsson x1i?

Reasons for the black screen of the mobile phone:

1. Under normal circumstances, when the mobile phone stores too many things, I think many friends can feel that the execution speed of the mobile phone is too slow, and when 8% of the memory that their mobile phone can drive is occupied, it may be down.

2. This is that 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 needs a lot of tests to find, usually caused by the phone being knocked.

3. It is very common for many mobile phones to have a black screen after a long time of use. The main reason is that the effective use time of the mobile phone battery is one year, or three years, but there are problems in one year. Excessive use leads to the aging of the mobile phone battery and insufficient voltage.

4. There are many applications for smart phones, but some of them are inherently conflicting, which can also lead to black screen, so the black screen after installing many softwares is basically this reason.

5. Many people are keen to use better systems. In fact, some systems are not supported by mobile phones, and others are incomplete, which will inevitably lead to a black screen when using them in the future.

If you have any questions, you can ask me, and I will give you a reply as soon as possible. Please help me adopt them if it is helpful. I wish you a happy life ~