The TV always looks at the screen and sometimes it gets better on the other hand

The black screen of the TV is a malfunction phenomenon of the TV, and it is also the most common, which is manifested as no image. There are generally two main situations of TV black screen; One is that there is no image, there is sound, and the TV screen is not lit; The other is that there is no image, no sound, and the TV screen is bright. These two conditions are the most common black screen phenomenon.

The black screen of the TV is a malfunction phenomenon of the TV, and it is also the most common, which is manifested as no image. There are generally two main situations of TV black screen; One is that there is no image, there is sound, and the TV screen is not lit; The other is that there is no image, no sound, and the TV screen is bright. These two conditions are the most common black screen phenomenon.

The black screen of the TV is a malfunction phenomenon of the TV, and it is also the most common, which is manifested as no image. There are generally two main situations of TV black screen; One is that there is no image, there is sound, and the TV screen is not lit; The other is that there is no image, no sound, and the TV screen is bright. These two conditions are the most common black screen phenomenon.

The TV looks at what is going on with the flashing black screen.

1. This fault may be a problem with the switching power supply circuit, or it may be a problem with the backlight drive circuit, check as follows:

First of all, measure whether the voltage of each group at the output end of the main switching power supply circuit is normal, especially whether the 24V voltage is normal and stable.

If all of the above are normal, it means that the switching power supply circuit is not faulty, otherwise it is a switching power supply circuit problem.

Measure the backlight driver circuit control chip, whether the voltage of each pin to the ground is normal, and if there is an abnormality, check the components around the abnormal pins of the chip.

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.

5. The solution is: disassemble the TV 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 component failure, it can be replaced with a part of the same model.

Answer: This kind of problem on TV is mainly caused by poor contact between the parts of the TV, so the TV occasionally goes black. So when dealing with it, first disassemble the TV, carefully see if the circuit inside is soldered, and then see if the parts on the motherboard are faulty, if this is the case, as long as the welding is done in time. If the part is damaged, it is necessary to purchase a replacement part of the same model.

Answer 1: There may be a problem with the power connection of the TV. 2. It may be that you pressed the standby button of the remote control by mistake, which makes the TV enter the standby state. 3. It may be caused by hardware failure. 4. It may be that a time limit is set**.

C: Users Administrator Desktop Cover Picture TV. PNG TV.

Suggested Treatment:

1. If the power indicator of the TV is not lit, it may be that the power connection of the TV is abnormal, resulting in a sudden power failure and a black screen, such as whether there is a power outage at home, whether the power plug is loose, whether the power cord is faulty, etc., you can check one by one and find out the problem and deal with it accordingly.

2. If the power indicator of the TV is on, it may be that the user accidentally pressed the standby button of the remote control, which makes the TV start to enter the standby state, so the black screen is displayed, at this time, you only need to press the standby button of the remote control again, you can wake up the TV and restore it to the normal screen display state.

3. If the TV screen is still black after the above methods are checked, it may be caused by hardware failure, such as the failure of the power module, short circuit or open circuit at the switching circuit, failure of the high-voltage board, failure of the LCD screen or screen cable, failure of the motherboard chip or other components, etc., you need to contact the after-sales service of the TV to overhaul the TV to solve the problem.

4. First of all, see if the time limit is set**, if it is left with a black screen, turn it off and open it after a while and it is normal, so repeatedly, you can enter the menu to cancel the time limit**, that is, the time item is zeroed, so that you can.

Ask a question, and you can make a few points.

If it doesn't work, just call the maintenance personnel to take a look.

Questioning was a hot topic a long time ago.

Ask about that a year ago.

Thank you, I can help you.

Ask what's wrong with that.

1. It may be that the picture tube of the TV is malfunctioning. 2. It may be that there is a problem with the TV power supply, resulting in a sudden black screen of the TV.

But after a while, it automatically recovered. 3. It may be a TV black screen problem caused by overclocking.

Suggested Treatment:

1. There may be a problem with the filament of the picture tube. You need to disassemble the TV to measure whether the filament foot of the picture tube has voltage,See if the filament is bright,If the filament is not bright,But there is still voltage,Then turn off the TV,Then use the resistance to test whether the filament foot is open。

If it is an open circuit, it is said that the filament of the obvious image tube is broken, and the picture tube can be replaced.

2. The power supply of the host is damaged or the power supply quality of the host is poor, which often causes the black screen failure of the TV. For example: when some new equipment is added, the display will have a black screen failure, after eliminating the quality and compatibility problems of accessories, the quality of the power supply is not good, and the lack of power is the main cause of the failure, at this time, you may also hear the horn in the machine 12 consecutive alarms, replacing the high-power and high-quality power supply is the best solution.

3. Overclocking or overclocking parts that are not suitable for overclocking will not only cause black screen failures, but also cause damage to other TV accessories in serious cases. There is also excessive overclocking,Or poor heat dissipation after overclocking components that are not suitable for overclocking,Or the cooling fan is damaged during normal use, and it does not turn at all, etc., which will cause the TV system to self-protect and crash and black screen。

1. There may be a problem with the power connection of the TV. 2. It may be that you pressed the standby button of the remote control by mistake, which makes the TV enter the standby state. 3. It may be caused by hardware failure.

4. It may be that a time limit is set**. Suggested handling methods:1、If the power indicator of the TV is not lit,It may be that the power connection of the TV is abnormal, resulting in a sudden power failure and a black screen,For example, whether there is a power outage at home,Whether the power plug is loose,Whether the power cord is faulty,You can check one by one and find out the problem and deal with it accordingly。

2. If the power indicator of the TV is on, it may be that the user accidentally pressed the standby button of the remote control, which makes the TV start to enter the standby state, so the black screen is displayed, at this time, you only need to press the standby button of the remote control again, you can wake up the TV and restore it to the normal screen display state. 3. If the TV screen is still black after the above methods are checked, it may be caused by hardware failure, such as the failure of the power module, short circuit or open circuit at the switching circuit, failure of the high-voltage board, failure of the LCD screen or screen cable, failure of the motherboard chip or other components, etc., you need to contact the after-sales service of the TV to overhaul the TV to solve the problem. 4. First of all, see if the time limit is set**, if it is left with a black screen, turn it off and open it after a while and it is normal, so repeatedly, you can enter the menu to cancel the time limit**, that is, the time item is zero, so you can.

Summary. 1. There may be a problem with the power connection of the TV. 2. It may be that you pressed the standby button of the remote control by mistake, which makes the TV enter the standby state. 3. It may be caused by hardware failure. 4. It may be that a time limit is set**.

What is the reason why the TV screen is sometimes black for a while?

1. There may be a problem with the power connection of the TV. 2. It may be that you pressed the standby button of the remote control by mistake, which makes the TV enter the standby state. 3. It may be caused by hardware failure. 4. It may be that a time limit is set**.

How else can we help you?

This situation is usually caused by the failure of the TV circuit, or the parts on the motherboard, caused by poor contact, this fault usually needs to be disassembled and repaired, it is recommended to find a professional maintenance master to carry out, otherwise the dust stool is easy to cause secondary damage to the TV.

Suggested workaround:

1. Disassemble the TV first, carefully check whether the circuit inside the TV has virtual soldering, and then check whether there is a fault point on the motherboard. If the part is damaged, just buy the part of the same model and replace it.

2. Also check whether the power supply of the TV is faulty, and the TV has a black screen.

This is also a matter of taking into account the power supply problem, to see if the plug is loose and has poor contact, this fault is easier to solve, as long as the plug is plugged back in.

3. There is also a situation that may make the TV appear black for a while, that is, the backlight plate of the TV is faulty, usually the switch chip of the backlight board is faulty or the fuse of the high-voltage board.

If it is burned but not completely burned, you only need to find a professional maintenance master for targeted testing and maintenance, and replace the switch chip of the backlight board or the fuse of the high-voltage board to solve the problem.

The TV screen goes black for a while, it may be due to a signal failure, the TV going into hibernation, and a faulty circuit. Signal failure refers to a problem with the signal input of the TV, resulting in the TV being in a black screen or standby state; It is also possible that there is a problem with the TV's backlight plate, which is a fault of the TV's line; It should be noted that when the TV is in a dormant state, it will also make people mistakenly think that it is a black screen, and when the remote control is pressed, the TV will end hibernation and turn it on again, which will also make people mistakenly think that it is a black screen and it is good again. The TV screen is black and it's good to check the steps and solutions:

1、If the TV does not have the problem of black screen in another place,Then it may be caused by the poor signal input of the TV,At this time, you can check the signal line of the TV or the digital top box of the TV to confirm,When the line is found to be loose,You can fix it to solve。 2、If the TV is in the process of black screen,The power supply can be started normally,Then the life is that the backlight board is faulty,This is also the circuit problem,Generally speaking,The problem of the circuit is that the circuit is burned or the internal chip fails,Therefore, the circuit or chip needs to be repaired,Otherwise, the problem of TV black screen cannot be solved。 3、When the TV screen is black again,It is very likely that the TV has automatically entered the black screen state due to the TV not operating for a long time,This is when people press the remote control,The TV will immediately end sleeping,Re-operation,This situation is also relatively common,You need to screen it yourself。