How to repair the common problems of LCD TV What are the charging standards

What is the minimum charge per inch for repairing an LCD TV?

The screen accounts for nearly 70 of the whole machine**, if you buy it for 3000 yuan, change the screen** about 2000 yuan, and now the market changes the screen**, 42 inches of 1300 yuan, 47 inches of 1500 yuan, 50 inches of 1700 yuan, (**** on the Internet, for consumer reference only).

The LCD TV display screen is broken, the best way is to replace it with a new one, however, this needs to be replaced by the TV manufacturer, mainly because the LCD TV screen size, specifications, models, and the backlight is usedLED, or the tube, the number of tubes, etc. are different, and there is no ready-made screen to replace in the general daily home appliance maintenance department.

LCD TV maintenance fault identification.

1. In the process of using the LCD TV, if there is no sound and image problem when the TV is turned on, and the power light of the TV flashes and becomes ever-bright, and the TV flashes white light at the moment of start-up, then the failure of the TV should be that the backlight driver board of the TV is damaged, but it is not excluded that it is caused by the problem of the TV backlight tube.

2. After the TV is turned on, there is no phenomenon, no sound, no image, and the power light is not on. The cause of this failure should be a problem with the power strip first, and again it may be caused by the CPU part of the TV not working properly.

3、The phenomenon of the screen of the TV appears after it is turned on,But the sound display of the TV is normal,The reason for this factor should be the poor digital board of the TV,The second factor should be caused by the poor contact of the connecting wires in the machine。

4. The TV cannot be turned on after the light flashes. The fault of this LCD TV should be that the CPU bus of the TV is not working properly or the IC of the LCD TV is not in good contact.

LCD TV LCD screen repair.

1、When the TV has a full screen of miscellaneous spots or a full screen of regular vertical bars, it is generally a problem with the buffer plate of the TV,At this time, when the LCD TV is repaired,You can replace a pair of buffer plates,Or measure which IC line fails,Then replace it。

2、The problem that LCD TV is more likely to appear is dark bands and lines,When LCD TV has such a problem,In fact, it can be summarized as a problem with the TV display,The reason for this phenomenon on the LCD TV display screen may be because the TV temperature is too high, resulting in the connection point between the COF of the LCD TV and the screen,At this time, when the LCD TV is repaired, it can be repaired by ironing the flat iron cushion insulation medium。

3、LCD TV is related to start-up, but there is no light and sound after a period of time,Generally, it is caused by the failure of the inverter circuit of the TV screen component,In addition, there is also the aging or damage of the TV light pipe,TV high-voltage plate protection。 In this case, when performing repairs, it is possible to determine whether there is a problem with the high-voltage board itself by canceling the average value on the high-voltage board and feeding it back into the circuit.

Hello, the cost of the repair is not fixed, it depends on the failure situation. If the LCD screen is broken, there is no way to repair it, it can only be replaced, but the cost will be higher. In addition, if the LCD screen is not hard damaged, it is just a black screen.

The screen is not necessarily broken, so it is best to contact the maintenance staff to help you check it before making a conclusion.

1. Different faults, the dimensions are not the same.

2. The power board is not the same as the motherboard is bad and the LCD screen is bad.

3. If the warranty is passed, the door-to-door fee, maintenance fee, and component accessories fee will be charged separately.

How much does it cost to repair the LCD screen of the TV, it depends on the screen size of the TV and the brand. Generally, the screen accounts for about half of the TV.

Question: TV has power supply,No**,The master said that it takes more than 500 dollars to repair,What parts are broken?。

Is the power strip good and is the motherboard bad?

It is possible that there is a problem with the integrated circuit.

Ask a question about how much will it be?

This depends on what kind of manifold is broken. There are many kinds of integrated circuits, and the differences are huge. It is recommended that you contact the manufacturer for after-sales inspection and maintenance to avoid being pitted.

1. Magnetization of the TV.

Causes of magnetization of the TV: The TV has been subjected to severe vibration, the degaussing resistance inside the TV is damaged, the magnetization is affected by the magnetic objects next to it, and the deflection coil or color pure magnetic ring in the TV is displaced.

Magnetization of the TV solution: After the TV is subjected to severe vibration, there will be more situations, and it is not certain whether it is the damage of the components or human factors. If the picture can be displayed, except for the halo phenomenon of the screen, everything is normal, then it can be solved with a professional degausser.

If it can't be solved, it is generally that the degaussing element inside is damaged, and the component should be replaced. Be careful not to place magnetic objects next to the TV, as this will have a big impact on the TV. There is also a color system that has not been adjusted well, so you can adjust it yourself.

2. There is no electricity on the whole TV.

The reason for the lack of power of the whole machine: This is a very simple fault, which is mainly caused by the internal power supply and the external power supply of the TV. Generally, the failure rate of the external power supply will be higher.

What is more likely to be damaged are some small components in the machine, which are relatively small, such as: fuses, rectifier bridges, power switches, etc. Another is the failure of the driver board, which causes the whole machine to have no power.

The whole machine has no power to solve: if it is the cause of the power part, it is relatively simple to overhaul, and the problem can be solved after replacing these parts. If it is a fault of the driver board, it is a little more complicated, to check whether the relevant voltage of the power supply is normal, the failure of the driver board will cause the two groups of power supplies to have no output voltage, as long as the voltage is problematic, the driver board must be a problem.

3. There is sound but no image.

Reasons for sound and no picture: The first suspicion is that there is a problem with the high-frequency head, which will directly lead to this situation. There is also the color system is not adjusted to the pair, and the brightness is not adjusted to come out, and the color system is checked by adjusting the remote control.

After the high-frequency head is damaged, there is no image input, so there is no image display on the TV screen, check whether the relevant parameters of the high-frequency head are normal, and then replace. Then there is the adjustment of the color system of the TV, which is also one of the reasons, but this is usually relatively rare.

When the TV is turned off, you can see the light of the TV at the moment of turning it off, and there is a little discharge sound, then it can be concluded that the picture tube of the TV is normal.

How much is a 45-inch LCD TV.

If it is Changhong TV,The cost of door-to-door inspection is30Yuan,The specific maintenance cost depends on the local maintenance fee standard。 The price bureau determines the specific repair cost, and it also depends on the different TV models. If it's a Skyworth LCD TV,The cost of opening the cover is about100,If it's an ordinary picture tube TV,The cost of maintenance is about 50 yuan。

If the brand of our TV is Hisense,The cost of door-to-door repair is between 50 yuan and 200 yuan,The inspection cost of opening the cover is about 50 yuan。

Generally speaking, the maintenance cost of TV is calculated separately,It also depends on what the specific charging standard is in each place,But if our night view display screen is damaged,Then the maintenance will be very high,Even similar to TV**,So we must consider carefully,,Some families might as well choose to change a TV,This also saves a lot of things,Once we send it to the maintenance department for maintenance,Then the repair time is likely to be up to several months,So we also have to consult in advance。

Summary. TV maintenance fee standard Hello dear,When repairing the TV,When repairing different TV parts, it's different,When the TV is generally repaired,Its basic maintenance cost is RMB。 I hope I can help you!

If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, your support is also the motivation for my progress, and finally I wish you good health and a happy mood!

TV maintenance fee standard Hello dear,When the TV is repaired,When the different TV parts are repaired, it's different,When the TV is generally repaired,Its basic maintenance cost is 280 yuan。 I hope I can help you! If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, your support is also the motivation for my progress, and finally I wish you good health and a happy mood!

The indicator light flashes and the machine cannot be turned on.

The indicator light flashes and can't turn on the machine, Hello dear, first measure whether the voltage of each group at the output end of the switching power supply circuit is normal. If the above measurement is normal, it means that there is no fault in the switching power supply circuit, otherwise it is a problem with the switching power supply circuit. If there is no such voltage, it means that the line oscillation circuit, the line push is a manual circuit, and the finch is not working normally, so it should be checked first, and the line oscillation circuit components can be checked.

I hope I can help you! If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, your support is also the motivation for my progress, and finally I wish you good health and a happy mood!

How much does it cost separately.

Hello dear, this is not necessarily, according to your description, it should be a motherboard problem, and it is not recommended to repair it if you shout about the nuclear motherboard problem, I hope I can help you! If my answer is helpful to you, please also give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, your support is also the driving force for my progress, and I wish you good health and a happy mood again!

How much does it cost to change the motherboard.

You are filial piety, you have to change the motherboard thousands of fast, it is not recommended to replace the motherboard, I hope mine can help you! If my answer to the manuscript is helpful to you, please also give a thumbs up (in the lower left corner of the evaluation), look forward to your like, your efforts are very important to me, your support is also the driving force for my progress, and finally I wish you good health and a happy mood!

The situation of LCD TV is not a display screen problem,It should be the connection between the logic board and the display screen,That is, the screen line!! This requires professional equipment to press the screen.

If the display itself is broken, the ** of replacing a display is 70% of the total price of the TV. For example, a 4000 yuan TV, its display screen will cost about 2800 yuan! That's why it's expensive to change the screen.

Hello:Personally, I think that 2000 yuan for a screen is not worth it to buy a new one, and now you can buy a new one with more than 2,000 screen TVs.

The cost of changing the screen of the TV depends on the price.

The brand of the TV, the type of TV screen, and.

Specific parameters! In general, his cost is the same as the size.

The size of the screen, the clarity of the screen, and the thickness are directly proportional.

relationship! However, there is no need to change the screen of LCD TVs now.

Because the service of the merchant is basically only replaced and not repaired during the warranty period.

If you really want to repair it, the cost will be relatively high, so it is better to buy it.

Taixin is cost-effective!

With so much money, it's better to just change it to a new one, my family used to be like this, and I changed it directly.