Is it related to the sudden failure of the TV to turn on the TV every night?

You're talking about the TV suddenly not turning on, not the lack of power.

This is a failure of the TV, and it has nothing to do with whether it is turned on and off every day.

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.

The TV was watching and suddenly the TV didn't power on, what's going on?

Hello, the TV is looking at it and suddenly the TV is not powered on, there are two main possibilities: first, the power supply line of the TV is not connected; Second, the TV itself is faulty. This can be checked by:

1.Check the outlet to which the TV power cord plug is connected to see if the power supply is working properly. It is recommended to test the power with other small household appliances at home, if it is a problem with the power cord and socket, replace the socket or check the wiring.

2.If the supply voltage is unstable, the TV may be blown off due to the voltage being too high. If you disassemble the TV, you can check it out, and replace the insurance to remove the fault.

3.If the voltage is stable and the power supply is normal, there is a high probability that there is a short-circuit fault in the TV, resulting in the overcurrent of the fuse. In this case, even if you replace the insurance, there will be a circuit breaker, indicating that there are components inside the TV that are damaged, and it is not recommended to let go easily to avoid causing a larger area of failure.

It is recommended to contact after-sales service or find a professional master for on-site maintenance.

After the TV suddenly lost power, it could no longer be turned on, and the indicator light was no longer on. What's going on?

1. The indicator light is not on, and it is not turned on, please make sure that the socket has power and whether the power switch of the TV is turned on. For some machines, the boot status indicator is unclear, but it is not reflected on the screen, which means that there is a problem inside the machine and needs to be repaired. 2、The indicator light is on,If you don't turn it on, please press the light and standby button on the TV panel,If there is no standby exciting button,It is recommended to press the program "" button,See if it can be turned on,Exclude remote control shutdown。

There are basically the following reasons why the TV power indicator does not light up:

1) Power failure. This should be a very simple fault, the general LCD extension internal power supply and external power supply, the external one is more common. No matter what kind of power supply, its structure is much simpler than the power supply of CRT display, and the vulnerable ones are generally some small components, such as fuses, rectifier bridges, 300V filter capacitors, power switch tubes, power management ICs, rectifier output diodes, filter capacitors, etc.

2) The power regulator circuit of the driver board is faulty. If the circuit of the switching power supply is faulty, the two groups of power supplies may be no output, first check whether the 12V voltage is normal, and then check whether the 5V voltage is normal, because the working voltage of the MCU chip of the AD driver board is 5V, so when the fault of the MCU chip of the AD driver board is 5V, it is impossible to find the fault that cannot be turned on. First use a multimeter to measure the 5V voltage, if there is no 5V voltage or the 5V voltage becomes very low, then one possibility is that there is a problem with the input stage of the power supply circuit, that is to say, there is a problem with the power supply part of the 12V conversion to 5V, this fault is very common, check whether the regulator block is open or damaged. Another possibility is that the load of 5V is heavier, and the 5V voltage is pulled very low, in other words, there is a problem with the signal processing circuit of the rear stage, and some circuits are damaged, causing the load to be heavier, and the 5V voltage is pulled very low.

3) MCU failure. There are many reasons for this situation, on the one hand, the MCU's program is flushed out and may not boot up, and the MCU itself is damaged, for example, the MCU's IO port is damaged, so that the MCU can not scan the buttons, and when encountering this fault caused by the MCU, it is useless to find the problem of hardware, even if you change the MCU, you can't solve the problem, because the MCU needs to be programmed and coded, Unless you can buy an MCU with a program, it is often difficult to accept. Therefore, in most cases, it can only be replaced with a generic AD driver board.

Determine whether your home appliance meter is overloaded, make sure that the socket and wiring board are connected normally, reconnect it, if the TV is still not on, it is the problem of the TV itself, the internal short circuit or the small fuse is blown out, directly call your TV brand's 400, and make an appointment with professional maintenance personnel to check and repair it.

Can other electrical appliances work? If it doesn't work, it should trip. If it can be used, there is a Kenneng socket broken, can you try it in another place? If not, it's a problem with the TV.

Since it's an old TV, if it's more than ten years,I recommend not repairing it,The TV is aging,Because no matter how you repair it,The cost should be more than 100 yuan,Maybe there will be a problem elsewhere in a few days,A lot of money is spent on one repair and two repairs,And it doesn't go well,The old TV can still be sold for a hundred and ten yuan now,And a new 29-inch TV is now about 900 yuan,It's definitely better than your current one。 Let's change it. Don't bother.

My suggestion, you take the idea.

The TV can't be turned on after a sudden power failure, mainly because the motor may be broken, it's best to check the line, if there is no problem, it can be made directly.

Hello Kiss is happy to answer this question for you. The solution to the problem of not turning on the LCD TV at noon and at night is as follows:1、It may be caused by the TV not being connected to the power or not turning on the power switch,You can check item by item。

Make sure the TV is plugged in and the power switch on the body is turned on to get back to normal. 2. If the power has been turned on and the power switch is turned on, and the TV indicator still does not light up, it means that the hardware fault of the TV is caused. For example, power supply failures, including fuses, rectifier bridges, filter capacitors, power switch tubes, power management, rectifier output diodes, filter capacitors and other component failures; Or the power regulator circuit of the driver board is faulty.

This situation needs to contact the after-sales service of the TV to conduct a comprehensive inspection and repair of the TV in order to solve it. The reasons why the LCD TV won't turn on are as follows:1

Before turning on, check whether the red standby light under the TV shirt is on, and if it is not on, check whether the two ends of the power cord are connected securely and whether the power socket has electricity. 2.Replace the remote control battery or use the body keys to power on.

3.The standby light is on but can't be turned on, and there is an abnormal sound when it is turned on, it is preliminarily judged to be a TV failure, and the maintenance personnel are requested to come to the door to detect and deal with it. 4.

After powering on, the indicator light is not lit Solution: Suspect that the problem is in the standby circuit or preamp. Indicates that the circuit is not working.

The power supply of the standby circuit has also reached the rotten cavity, but there is no power supply output, so the problem should be in the standby circuit, the standby voltage is measured, and there is no abnormality, and the replacement is not good. Later, the unintentional test has broken down, and the test machine LCD TV returned to normal operation. 5.

The display solution of the power supply when the machine is not used: it may be that the protection circuit of the TV is faulty, at this time, just replace the fuse of the TV. But if the screen of the TV does not respond, it may be that the phenomenon of the TV is broken.

There are a number of possible reasons why a TV is out of power. Here are some common reasons:

1.The power cord plug is not plugged in properly or is loose. Please check that the power cord is properly plugged into the TV and electrical outlet.

2.There is no electricity at the electrical outlet. You can try plugging in other appliances to confirm that the socket is working properly.

3.The power switch on the TV is not turned on. Please check that the power switch on the back of the TV or on the remote control is turned on.

4.The battery of the TV remote is depleted. Please change the battery and test whether the remote control is working properly.

5.The fuse of the TV is blown out. If none of the above fails, you may need to check whether the fuse inside the TV is blown and replace the damaged fuse.

If none of the above methods can solve the problem, it is recommended to contact a professional maintenance personnel for further inspection and repair.