The current era is advancing and science and technology are developing. Skyworth TV has gradually entered millions of households. However, every kind of technology product brings us great convenience, but it may also cause some minor problems. Let's talk about how Skyworth TV's black screen can be solved.
There are many reasons for the black screen on the TV. In order to solve the problem of black screens, of course, we must prescribe the right medicine.
The first reason:
The failure of the circuit power supply in the home caused a black screen on our TV. This kind of failure is very common in our daily life. The possible cause is that the fuse burns or the TV chip fails.
Its phenomenon is as follows: the panel button does not respond, and the TV indicator light is not bright. Skyworth TV has a black screen but no image.
Solution:
In the search for the reasons for this situation first need to check whether the TV voltage is normal. First, check whether the voltage of 12V and 5V is normal. When the TV has a black screen, use a multimeter to test the 5V voltage. If the voltage of 5V is normal, it may be a problem at the TV input stage. This means that the 12V voltage is in the turn. Skyworth TV black screen caused by problems at 5V.
When there is a problem in the process of converting 12V to 5V voltage, it is generally required to check whether the insurance of the television is burned or if there is a problem with the voltage regulator chip. Part of the machine is the built-in power switch output 5V and 12V voltage, TV power supply part failure is likely to result in two groups of voltage can not be output, if the 5V voltage load will increase the same will pull 5V voltage, you need to circuit one by one Troubleshoot and troubleshoot the circuit.
The second reason:
Problems with the TV-driven backlight circuit
Mainly as follows: the panel button reaction is normal, the indicator light is also lit, but the screen has been a black screen.
Solution:
The third reason:
When Skyworth TV turns on the black screen, there are sounds and characters. This shows that the circuit is basically normal. The lighting conditions of the picture tube are all available. Its failure is mainly due to the failure of the luminance channel or the loss of the luminance signal and decoding circuit failure.
Solution:
After all, TV is a high-end technology product. If the Skyworth TV we buy has a black screen, it is best not to dismantle and repair it. It is recommended that you find a professional repair person to do the repair. In addition, if you purchase Skyworth TV soon and it is still under warranty, then you can choose to find a dealer to carry out the warranty. It is important to note that before this, you must not find repairs on your market to repair it casually to prevent The dealer does not give warranty on this ground.
In addition, we must take good care of our TVs when we use TVs on a daily basis, even though Skyworth TVs are still generally recognized by consumers for their quality. However, these TV products are still more delicate. Some of the grumpy people in the family sometimes use televisions to exhale, which is not worth the candle.
Note: When we usually wipe the TV, do not wipe it with a wet rag. If you do not pay attention to it, it may cause the TV to be short-circuited, leading to a black screen. Some consumers have reported that the TV set they just bought is wiped with a care solution and does not display an image after the TV is turned on. It can only hear sounds. The reason for this may be that the TV's high voltage board is broken or it is a lamp. Fault problem.
There are many reasons for the black screen on the TV. In order to solve the problem of black screens, of course, we must prescribe the right medicine.
The first reason:
The failure of the circuit power supply in the home caused a black screen on our TV. This kind of failure is very common in our daily life. The possible cause is that the fuse burns or the TV chip fails.
Its phenomenon is as follows: the panel button does not respond, and the TV indicator light is not bright. Skyworth TV has a black screen but no image.
Solution:
In the search for the reasons for this situation first need to check whether the TV voltage is normal. First, check whether the voltage of 12V and 5V is normal. When the TV has a black screen, use a multimeter to test the 5V voltage. If the voltage of 5V is normal, it may be a problem at the TV input stage. This means that the 12V voltage is in the turn. Skyworth TV black screen caused by problems at 5V.
When there is a problem in the process of converting 12V to 5V voltage, it is generally required to check whether the insurance of the television is burned or if there is a problem with the voltage regulator chip. Part of the machine is the built-in power switch output 5V and 12V voltage, TV power supply part failure is likely to result in two groups of voltage can not be output, if the 5V voltage load will increase the same will pull 5V voltage, you need to circuit one by one Troubleshoot and troubleshoot the circuit.
The second reason:
Problems with the TV-driven backlight circuit
Mainly as follows: the panel button reaction is normal, the indicator light is also lit, but the screen has been a black screen.
Solution:
When the inspection is performed, the TV monitor is connected to the host computer and then the TV screen is observed. If the TV screen shows a dim picture, then the signal processing power of the TV A/D driver board is Normally, the reason for the black screen of the TV is locked on the high voltage board and the high voltage board switch that drives the backlight. Generally, the insurance of the high voltage board is burned and the voltage of 12V cannot be supplied in time.
The third reason:
When Skyworth TV turns on the black screen, there are sounds and characters. This shows that the circuit is basically normal. The lighting conditions of the picture tube are all available. Its failure is mainly due to the failure of the luminance channel or the loss of the luminance signal and decoding circuit failure.
Solution:
When the brightness channel of the TV has a problem or the signal of the brightness is lost, such a problem is not our own solution. If this problem is not properly dealt with, it will cause the brightness channel to have no light required to transmit the screen at all. At that time, we must ask the special personnel to come to the door for maintenance. Defective decoding circuit can only replace the decoding circuit.
After all, TV is a high-end technology product. If the Skyworth TV we buy has a black screen, it is best not to dismantle and repair it. It is recommended that you find a professional repair person to do the repair. In addition, if you purchase Skyworth TV soon and it is still under warranty, then you can choose to find a dealer to carry out the warranty. It is important to note that before this, you must not find repairs on your market to repair it casually to prevent The dealer does not give warranty on this ground.
In addition, we must take good care of our TVs when we use TVs on a daily basis, even though Skyworth TVs are still generally recognized by consumers for their quality. However, these TV products are still more delicate. Some of the grumpy people in the family sometimes use televisions to exhale, which is not worth the candle.
Note: When we usually wipe the TV, do not wipe it with a wet rag. If you do not pay attention to it, it may cause the TV to be short-circuited, leading to a black screen. Some consumers have reported that the TV set they just bought is wiped with a care solution and does not display an image after the TV is turned on. It can only hear sounds. The reason for this may be that the TV's high voltage board is broken or it is a lamp. Fault problem.