The lower left corner of the TV has a black screen,What s the matter with a black screen in the midd

When there is a failure, it is important to learn how to judge the cause of the failure, so if your TV has a black screen.

Then there are the following situations that may cause the TV to have a black screen, one is the failure of the TV itself, the second is the failure of the set-top box added, and the third is the failure of the ** line connecting the TV and the set-top box. For these three situations,You have to rule them out one by one,For example,You can first disconnect the item box and**cable from the TV,Turn on the TV separately,Check if the TV has a signal,Under normal circumstances,Even if the TV has no external signal,At least it will appear blue screen。

The display is either a snowflake-shaped screen display, which shows the status of no signal reception. If the screen is still black after doing this, it is a fault of the TV itself and can only be sent for repair. If the TV shows no signal reception, it is not the fault of the TV itself, it may be a problem with the set-top box or the first line, and then you will check the set-top box and the first line, for example, if you have a *** machine or VCD disc player or the like, replace the set-top box and connect it to the disc player, which is done to test the fault of the set-top box and the ** line.

It should be that the circuit board inside is burned out, so it is recommended to find someone to take a look.

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.

The main reasons are: 1. There is virtual welding in the internal parts or circuits of the TV; 2. The internal screen cable of the TV is faulty; 3. TV logic board.

malfunction; 4. The sawtooth wave of the field oscillation circuit is abnormal, resulting in no image at the top 1 2 of the screen; 5. The time constant of the counter-path blanking circuit.

If it is too large, about 1 2 of the upper part of the image will be suppressed by the blanking circuit, resulting in a black screen of about 1 2 of the upper part of the image.

Suggested solutions:1、If there is a virtual welding situation in the internal parts or lines of the TV,It will lead to the poor contact of the display circuit,It will also lead to half of the black screen of the TV display,It is recommended to detect the parts and circuits of the TV,Repair welding operation for the parts of the virtual welding。 2、The situation that half of the TV has a black screen may also be caused by the failure of the screen cable inside the TV,For example, part of the screen cable is broken、Oxidation of the screen line contact, etc.,It will lead to poor contact of the screen wire,Thus causing half of the screen to be black,It is recommended to replace the screen cable,You can solve the problem。

3. If the above faults are discharged, it may be because of the LCD screen inside the TV.

In case of failure or failure of the logic board, the maintenance difficulty of this situation is relatively high, and it is recommended to find a professional maintenance master to conduct comprehensive inspection and maintenance.

The TV at home suddenly appears with a black screen below during use.

The image above shows that this is normal, usually because the TV's hardware is malfunctioning. Suggested solutions:1、Check whether the power supply of the TV is loose,Whether there is a connection failure,Whether the power switch of the TV pops up a prompt of abnormal power supply,Check one by one to fix it。

2. Check whether the signal input of the TV is normal and whether the connection is smooth, and then check the signal input by pressing the signal source key of the remote control and switching mode by mode. 3、If the virtual welding situation inside the TV will also lead to this situation,It is usually necessary to disassemble the TV,Then pay attention to check the welding of each part,Repair welding for the position of virtual welding can solve the problem of the black screen under the TV。 4、If the above methods cannot solve the problem,It is usually because the hardware of the TV fails,For example, the switch circuit failure of the main board of the TV、Other component failure、Screen failure, etc.,At this time, you can only contact a professional maintenance master to disassemble the machine for testing,Repair or replace components for specific fault parts,Don't blindly disassemble the machine by yourself,So as not to cause further damage to the TV。

Summary. What is the problem with the faint picture of the black screen of the TV, hello dear, for you to inquire about the black screen of the TV turned on, there is sound, and the image is faintly visible under the strong light, this fault can basically be determined to be a problem with the backlight, if there is a problem with the backlight, most of them are backlight plates and backlight strips, if they are machines within the past three years, most of them are light bar failures, because most of the current backlight boards are combined with the power board. I hope it can help you and wish you a happy life and good health!

What is the problem with the faint picture of the black screen of the TV, hello dear,For you to inquire about the black screen of the TV set turned on,There is sound,The image is faintly visible under the illumination of the strong light source,This fault can basically be determined to be a problem with the backlight,If there is a problem with the backlight,Most of them are backlight panels and backlight strips are bad,If it is a machine within three years of the near annihilation,Most of them are light strips so hail source barriers,Because most of the current backlight boards are combined with the power board。 I hope it can help you and wish you a happy life and good health!

If you want to judge whether this fault is bad, you need to open the back shell to measure, you have to have or imitate a multimeter, measure the output voltage of the backlight, and see if there is a boost at the moment of booting, if there is, it is that the light bar is broken, and if there is not, the backlight plate is broken. This kind of fault repair of their own overall situation, a little difficult, it is recommended that you contact the professional repair shirt this master maintenance, oh hope to help you, I wish you a happy life, good health!

The machine is relatively old.

Hello dear, then you need to contact a professional maintenance master for maintenance and processing, I hope it can help you, I wish you a happy life and good health!

1. It may be that the voltage is abnormal and needs to be replaced with new components. 2. It may be a fault of the motherboard and display. 3. Loose lines, poor contact, or hardware damage that needs to be replaced will cause a black screen.

4. Some parts of the TV have poor contact due to desoldering and virtual soldering. It is recommended to solve the method of party scattering:1、Check whether the motherboard and display screen of the TV are faulty。

If there is a problem with one of them, the direct consequence is that there will be a black screen and a normal screen half after booting. It is necessary to check for specific issues there such as loose wiring, poor contact, or damaged hardware that needs to be replaced. 2、Another problem is to check the screen cable of the inner part of the TV,It directly affects the imaging effect of the TV。

This can happen if the contacts of the strip fracturing cable are poorly contacted or damaged, and the loose ribbon cable needs to be inserted or replaced. 3、Half of the TV is black,The normal situation is about the same as the entire TV screen,It's just that half of the black screen is because the problem has not been fully involved。 Over time, this black screen phenomenon will cover the entire screen, so you need to contact after-sales personnel in time for inspection and repair.

First of all, check whether there is a problem with the backlight plate of the TV,If it is a problem with the backlight plate itself,Replace the backlight plate directly。 If there is a problem with the circuit of the backlight board, you can connect it to the host for a simple inspection, and if there is a problem, you can contact a professional for repair. It may also be caused by some running software in the TV, which can be cleaned up.

The TV is partially black.

Possible causes and solutions:1、The backlight plate is damaged:The backlight plate is an important component for the TV to display the light source,Once damaged by the light plate,The TV screen will be black。

To detect whether the backlight plate is damaged, you can disassemble the TV, or you can use a strong flashlight to illuminate the TV screen, to see if you can still see the image vaguely at the black screen, if you can see the image, but the screen is black, it means that the backlight plate is damaged. At this point, the backlight plate can be replaced. 2、TV software stuck:

Nowadays most TVs are smart TVs.

There will be a lot of application software installed inside, and if the software is stuck during operation, it may also cause a partial black screen of the screen. At this time, the TV can be cleaned and detected through the cleaning software and detection software that comes with the TV. 3. The components on the TV AD board are damaged:

Damage to the AD board components will cause problems with brightness control and cause a black screen. In this case, it is necessary to contact a professional for repair and replacement. 4. The LCD screen is damaged

Due to the influence of external forces, the LCD screen is partially damaged and can be disturbed, which will cause the TV to be unable to display the image normally, and the LCD screen needs to be replaced.