The TV takes a long time to turn on, what should I do?

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A TV malfunction, especially something as general as the TV not turning on, is not always associated with serious problems that only specialists can handle. Sometimes users themselves come up with a problem that can be easily solved and which they can handle on their own.

When repairing any equipment, including TV repairs, there is a certain algorithm for troubleshooting. Which starts from the socket and goes through the wires to the power supply, switching board, processor module, scanning module, synchronization ...., and ends with a faulty zener diode in the control unit or a broken transistor in the horizontal scan. Anything that can be done without opening the TV can be done not only by a specialist, but also by the user. Anything deeper, with a screwdriver, soldering iron, oscilloscope..., tweezers, scalpel and cucumber, is the job of TV experts.

Therefore, first the article is for users, and at the end for engineers.

The TV takes a long time to turn on: the main reasons

As a rule, the process of turning on the TV takes no more than ten seconds. Over time, some users note an increase in the on-time to a minute or more.

Even if the TV works fine after being turned on for a long time, you should understand that there is something wrong with your device. If possible, you should contact a service center to avoid more serious troubles. Modern television technology is a complex electronic system with a huge number of interconnected elements. For example, if one failed capacitor is not replaced in a timely manner, this may subsequently provoke the final failure of the entire device.

Experience shows that there are several main reasons why the TV takes a long time to turn on:

the resource of the cathode ray tube has been exhausted (only for kinescope models);
malfunctions in the power supply;
inverter failure;
problems with the image scanning system.

Cathode ray tube resource

In CRT televisions, the image was projected onto the surface of a cathode ray tube, which has a limited service life. With long-term use, the resource of the kinescope is exhausted, and it is noted:

reducing image brightness and saturation;
uneven glow of the kinescope surface;
increasing the time it takes for the image to appear after switching on.

REFERENCE! The depletion of life in CRT TVs is not a malfunction - it is simply an aging process. Typically, it occurs gradually over several years.

Currently, kinescope models are morally outdated. Therefore, when their service life is exhausted, it is more rational not to try to repair them, but to take a closer look at modern models.

Malfunctions in the power supply

Power supply – ensures the conversion of electrical network energy and its distribution across all elements of the device. This is the “heart” of the TV. There are two types of faults in the power supply. Some are associated with resource depletion, others with the failure of individual components.

Almost all power supplies contain electrolytic capacitors, which lose their capacity over time. As a result of this, the time it takes to supply power to the component parts of the device increases, and accordingly the switching process itself increases.

In addition to the natural aging process of power supply elements, its components often fail due to voltage surges in the power supply network. This circumstance can lead to an increased turn-on time for the TV, and may also be accompanied by extraneous noise during operation and flickering of the image.

The indicator is not lit

This is a sign that the problem may be a lack of power. In some situations, the light does not light up, but the TV turns on. In this case, it has burned out, therefore, it is necessary to change the indicator. There is no point in calling the service center prematurely. First you need to determine the cause of the problem. You can fix some problems yourself. The TV does not turn on and the indicator does not light up for the following reasons:

There is no power at the outlet. It may be broken, but you also need to check whether the switch in the panel is turned on. You can check the functionality of the socket using a regular indicator screwdriver or tester. Problems related to wiring are extremely difficult to solve on your own, so it is better to call a professional electrician.
The TV power cable is connected to an extension cord, but it is faulty. If the cause of problems with turning on the TV is the surge protector, then you need to test the functionality of the fuse and the power button.
The Network button is disabled. This key is located mainly on the bottom, side or back panel. If the button is disabled, then you will not be able to turn on the device from the remote control. Click on the “Network” button for the TV to start working correctly.
The mode is set incorrectly. If the user selects the wrong signal source, such as AV or HDMI, then the image disappears and a black screen is visible. It is possible that an automatic transition to sleep mode will occur. In this case, you need to select the digital TV mode again to normalize the operation of the equipment.
Failure of basic modules. Due to mechanical damage and short circuits, microcircuits and capacitors break. The power supply and control system elements also burn out. It will not be possible to check the functionality of all components without special equipment. Therefore, you should call professional craftsmen.
The fuse has blown. CRT models are often not turned on precisely for this reason. Due to a broken fuse, there is no voltage supply. Restoration involves replacing a broken component.

Users who are well versed in electronics and also have professional equipment at their disposal will be able to repair the TV on their own.

Electricity problems

If a plasma TV does not turn on, this is not yet an indication of a hardware failure. The problem may be caused by poor wiring, a damaged cable, or a faulty antenna. First you need to check the outlet. Perhaps it broke due to a voltage drop. Try connecting the equipment to a different power source. If the TV starts, then the cause has been determined correctly. In situations where the proposed recommendations did not help, you need to contact the service center. Professional technicians will carry out comprehensive diagnostics, during which they will identify faulty components.

Electrical problems lead to hardware failures. Voltage fluctuations become a catalyst for fuse blowing. Failure of this component prevents the TV from starting correctly. When the indicator lights up in normal color, you need to check the connection of the device with the source of the television signal. Change the signal source, for example, select HDMI, USB. Connect a USB flash drive or laptop to the TV through these interfaces. Try to reproduce some content. If everything is displayed correctly, then the problem is the lack of a TV signal.

Voltage drops can also be expressed in the appearance of noise when starting the TV, clicks are heard. The loading time of Smart TV increases significantly. All these symptoms indicate one of these breakdowns:

power supply is overloaded;
the protection system was automatically activated;
hardware modules burned out;
The power supply burned out.

All modern devices are equipped with a special blocker that prevents hardware modules from burning out. It turns on automatically after power surges. Therefore, problems arise with starting the equipment. Sometimes, in order to disable the blocker, you have to disassemble the TV. Therefore, in such situations, it is better to contact a service center.

It is impossible to do without the services of professional craftsmen if the power supply chip is burned out or the capacitor is swollen. Electrical problems can also cause resistor burnout.

Technical problems

The TV does not turn on due to a number of technical failures: transistors are burned out, boards do not work, fuses or capacitors are broken. Entrust complex diagnostics and repairs to specialists. A visual inspection will not allow you to determine the nature of the malfunction with maximum accuracy. This requires special equipment.

The TV stops working due to a breakdown of the matrix and backlight. Signs indicating the presence of such malfunctions:

black and white or multi-colored stripes appeared on the screen;
there is no image, but there is sound;
dead pixels, which visually look like gray dots;
When the TV starts, the manufacturer's logo is not displayed, and then only a black screen is visible.

The matrix stops working due to mechanical damage. It is impossible to restore a broken component. Therefore, the part is replaced. This is an extremely expensive repair.

What to do if the image does not appear immediately when you turn on the TV

If, when you turn on the TV, the image begins to appear with a delay, this indicates minor problems, which, if left untreated, can eventually lead to failure of the device. The main advice is that if you are not a repair specialist, do not try to fix the problem yourself, but contact a specialist.

Most of humanity spends their evenings in front of the TV. So you came home, turned on the TV as usual and noticed that the image appears much longer than usual. Why is this happening? Is this a malfunction, and what should I do in this situation?

The TV takes a long time to turn on: the main reasons

As a rule, the process of turning on the TV takes no more than ten seconds. Over time, some users note an increase in the on-time to a minute or more.

Experience shows that there are several main reasons why the TV takes a long time to turn on:

the resource of the cathode ray tube has been exhausted (only for kinescope models);
malfunctions in the power supply;
inverter failure;
problems with the image scanning system.

Cathode ray tube resource

In CRT televisions, the image was projected onto the surface of a cathode ray tube, which has a limited service life. With long-term use, the resource of the kinescope is exhausted, and it is noted:

reducing image brightness and saturation;
uneven glow of the kinescope surface;
increasing the time it takes for the image to appear after switching on.

REFERENCE! The depletion of life in CRT TVs is not a malfunction - it is simply an aging process. Typically, it occurs gradually over several years.

Currently, kinescope models are morally outdated. Therefore, when their service life is exhausted, it is more rational not to try to repair them, but to take a closer look at modern models.

What to do if the image does not appear immediately when you turn on the TV

The standard TV turn-on time is 2-3 seconds. If the device takes longer to turn on, this indicates a malfunction. Sometimes users do not pay attention to this nuance and continue to use the device as usual. But this minor symptom can lead to serious technical problems in the future.

If you want to find out why the TV takes a long time to turn on and what to do about it, then contact. Our professional technicians will cope with breakdowns of any complexity. We are open from 7:00 to 23:00 without breaks every day, including holidays and weekends, so the visit of the master will be agreed upon at a time convenient for the customer. We work with equipment from LG, Samsung, Sony, Philips, Supra, Mistery, Toshiba, Tomson and many other brands. If you want to repair TVs in St. Petersburg at home, then dial the number or order a call back from the operator on the website.

Inverter fault

The inverter is the component that runs the backlight in LCD TVs. It determines how bright and stable the LEDs are. If the inverter is broken, the TV will take a long time to start up. You can only verify that an element is faulty through professional diagnostics performed using special tools.

Most often, field-effect transistors and high-voltage transformers break down in the inverter. This part cannot be repaired; most often it is replaced as an assembly.

Reasons for increasing TV turn-on time

It is impossible to quickly determine why the TV takes so long to turn on.

Reasons why the image does not appear for a long time after pressing a button on the control panel:

Contacts are lost.
The TV's power supply is faulty.
The capacitors are swollen or drained.
Inverter fault.
Failures in the frame and line scanning unit.

Contacts separated

A fairly common cause is disconnected or oxidized contacts. Contact connections are rather fragile elements. Even with a slight physical impact (for example, shaking when transporting equipment), they can become separated, especially if they were not very securely soldered during assembly. Therefore, there are situations when even new TVs exhibit this defect.

To identify a defect in an electrical circuit, you need to “ring” it. After detecting a break, it is necessary to solder the contacts. It is better to entrust this process to an experienced engineer.

Malfunctions of the power supply and capacitor

If the power supply is faulty, the TV will not only take a long time to turn on, but after turning on it will also beep, click and show poorly.

If the power supply fails, CRT TVs sometimes enter operating mode after 20 minutes or even an hour. To make sure this is the part that is causing the problem, check your settings. If everything is in order, then we advise you to call a specialist.

But if you decide to carry out the repairs yourself, then before you begin the repair, do not forget to completely de-energize the device, because even after disconnecting the device from the network, high voltage remains in it. Remove the power supply. If a visual inspection reveals black burnt spots and holes on the board, then you need to replace the burnt part.

Pay special attention to the capacitor. This is the most vulnerable part of the node. The cap of a faulty capacitor will be swollen. And the part will need to be replaced.

The next stage is a visual inspection and “ringing” of the power supply circuit. The soldering of individual components is often broken. It will need to be restored.

If several parts in the power supply unit are faulty at once, then the entire element must be replaced.

Inverter failure

The inverter starts the backlight system in LCD TVs. It controls the brightness and stability of the LEDs. When diagnosing, you need to make sure that it is the inverter that is faulty, and not the screen backlight system.

Most often, high-voltage transformers and field-effect transistor switches break down in an inverter. It is very difficult to repair this part; more often it is replaced with a new one.

Power supply malfunctions

In modern models, the cause of the malfunction is often problems with the power supply. Not only does the TV take a very long time to turn on, but after turning on, extraneous sounds appear - clicks, squeaks. At the same time, image quality also suffers.

If the power supply malfunctions, the TV may take several minutes to turn on. The component needs to be repaired or replaced as an assembly. It is not recommended to do this yourself: the power supply is energized even after disconnecting the equipment from the power supply. By the way, the malfunction of the unit is determined visually by black spots and swollen capacitors.

If everything is in order with the block, the chain is tested. The soldering of individual contacts is probably broken and requires restoration.