Why doesn't the TV turn on, and what actions should I take?

Problems with TV

If no problems are found in the operation of electricity, the integrity of the extension cord or the TV’s network cable is not broken, therefore, the problem of the lack of switching on lies in the equipment itself.

First of all, we check that the “Power on” button is active. Manufacturers place the key in different places on the TV, usually on the back, side or bottom. The remote control works when the "Network" button is turned on.

In some cases, the TV may turn on, but it seems that it is not working - a black screen and no image. After the time has elapsed, the TV will go into sleep mode, after which you must select the digital TV mode again to normalize the operation of the equipment.

Basic modules are out of order

Mechanical damage or short circuits lead to breakdowns of microcircuits and capacitors. The power supply or control system elements may burn out. To check the functionality of each node, special equipment is required. In this case, only calling professional craftsmen will help.

The TV not turning on may be due to a blown fuse. Due to the failure of the fuse, voltage is not supplied to the TV. Faulty components require replacement, only after this the equipment will start to turn on.

The TV does not turn on - the light is on

If the TV does not turn on when the indicator is on, first of all, note that voltage is supplied to it. In this case, the diagnosis looks like this:

Since the TV does not respond to the response of the control panel, you should try to turn on the TV from the “Power” button, which is located on the front, side or back, depending on the model. If the TV turns on, check the control panel. The reasons for the remote control malfunction may be:

• Oxidation of contacts;
• IR sensor does not work;
• There is no power - the battery does not work or the battery is dead;
• The microcircuit is dirty;
• Sticking buttons;
• Water has entered the inside of the remote control.

Repairing the remote control is not difficult. In order to disassemble it, you only need a screwdriver and cleaning products to normalize the operation of the microcircuits and contacts.

The lack of response to the “Power” button indicates that the built-in protection may be triggered. It happens that the TV turns on for a few seconds and then goes off. Automatic operation of protection elements occurs after voltage surges.

If the TV was in sleep mode when the power was turned off, you should unplug it for 7-10 minutes. This is the recovery time, after which we insert the plug into the socket and try to turn it on. If this does not help, we consider the cause of the short circuit of the contacts when the hardware module burns out.

DIY repair

Some types of malfunctions can be eliminated without the help of specialists from the service center. Listed below are the main problems that even a user who is far from repairing electrical equipment can independently solve:

1. “Protection against unauthorized access” mode. You may have accidentally activated the so-called “child lock”, which prevents you from controlling the TV from the panel built into it. In such a situation, use a remote control whose signal is not blocked by this function. After successfully starting the television, do not forget to disable the protection mode.
2. Broken remote control. If the remote control is not working, you can use a special application for smartphones and tablets, which turns the smartphone into a full-fledged remote control. Here, as an example, we can mention the free TV-Remote utility from the AppStore and Google Play. It would also be a good idea to try to simply replace the batteries or accumulators in the faulty “remote control”.
3. Socket. A dark TV indicator means that the device is not connected to the power supply. We strongly do not recommend repairing the outlet yourself, but any user can handle connecting the TV to another energy source.
4. Weak signal/external interference. If there is no picture on the display, although the television itself is in an active state, the problem lies in bad weather conditions or problems with the cable provider. In this case, you need to call your communication provider to find out about any interruptions on the line, just wait a while.
5. Connecting external devices. The television monitor is configured to display information from devices such as a smartphone, computer, tablet. Go to settings and make sure that the signal is not coming through HDMI or AV channel.

The TV does not turn on - the indicator lights up red

If the indicator is red and the TV does not start, it is in standby mode. If the indicator is on, then everything is fine with the power supply. However, diagnostics are carried out precisely from this node - the parameters of the supplied voltage are measured.

In some cases, damage to the cable through which signals are transmitted to the base modules of the TV is possible. The condition of the power supply is assessed visually, the presence of swollen capacitors is assessed.

Even if the indicator is lit red, the cause of inoperability may be a faulty capacitor. The power supply does not receive a command to start the equipment correctly.

A broken power supply is not the only cause of the problem. The problem is in the voltage supply - zeroing the TV memory chips. We put the device into operating mode by updating the system firmware using the programmer. Such a device is found only in service centers.

A short circuit in the system board is another reason why the TV does not turn on when the light is on. Converters and voltage stabilizers are located here. For the processor to operate correctly, current is required. In the absence of current to the processor, limited functioning of the equipment is noted.

The indicator is green

If the indicator lights up green or blue and the TV does not turn on, we begin to study the state of the basic circuit - we measure its voltage, test it, and note the functionality of the backlight and power activator.

If you hear sound when switching channels, but the picture does not appear, the incorrect operation lies in the inverter or power supply. They supply power to the display backlight. The condition of the backlight lamps is checked.

If a TV with a green indicator on does not show a response to the remote control, then we note that the main chip is not receiving a signal. Its corresponding further transfer is impossible. To fix a problem in the memory or when the inverter is not working, a programmer is required to update the firmware of the microcircuit that is responsible for the memory.

In these cases, it all comes down to a malfunction in the system board, as a result of which signal transmission to the matrix controller is blocked. There may be sound but no picture. It is almost impossible to fix hardware faults with your own hands; it is better to contact the experienced technicians of our service center.

The indicator flashes in different colors

When this behavior occurs, we note that the processor generates a command to turn on the device and transmits it to each block. If one of the TV units fails to execute a command, the processor does not receive confirmation that everything is in order - the switching on is canceled and the equipment is switched to standby mode.

A change from red to green indicates possible software failures. In this case, it is worth considering the option of updating the firmware to return to the normal sequence of processes that occur on the motherboard.

Extraneous sounds when the TV is not working and there is no indication

Sometimes TV owners experience clicking or other sounds inside. Symptoms may vary:

• The TV does not turn on, the indicator blinks, the relay clicks.
• The light doesn't light up, the TV clicks.
• The TV beeps and won't turn on.

The most common causes of clicking noises on TVs are:

• Activation of the locking system . If certain types of faults occur (power supply or other units), the protective function is activated. It is designed to avoid more serious damage in the event of a malfunction. It is the blocker that makes characteristic clicks when the TV tries to turn on.
• Heating and cooling of plastic housing parts . So, even a working TV can click.
• Providing a signal about an activated (not used for a long time) operating mode from the selected source . In this case, TVs may squeak or whistle.
• Excessive load on the power supply. The cause may be a transformer, microcircuit or transistors. In this case, the TV does not turn on at all. You can’t do this without a qualified craftsman.

The TV does not turn on, the light is blinking

A light flashing in a certain sequence indicates a fault code. The code can be found in the instructions for the TV, which shows various errors, their identification and solutions.

If the indicator blinks chaotically without a certain sequence, this also indicates a malfunction. However, you will not be able to obtain information about the malfunction. It is necessary to diagnose the entire TV: the power supply and secondary converters, cables, processor and memory chip, whether the processor sends commands to turn on, whether these commands are processed.

TV won't turn on after a thunderstorm

If the TV does not work after a thunderstorm or turns off almost immediately after being turned on, it means that the protection system, which is found in many modern TV models, has worked.

The TV is in sleep mode during a power surge - the protection system turns on. To return it to working condition, unplug the plug from the socket for 7-10 minutes. This time is required to restore functionality. If voltage drops occur regularly, you need to install a surge protector or voltage stabilizer.

technical issues

The reason why the TV stopped turning on may be due to a malfunction of the control panel. To check this, you should press the start button - when the LED flashes, this indicates that the remote control is working correctly. But when the LED does not blink or does not light up at all, you should inspect the remote control. Sometimes all you have to do is change the batteries and the problem is solved. When the same remote control is available, it is recommended to try to turn on the equipment using it. If again there are no changes even when using a different remote control, you should try to start the equipment from the button on the case itself.

Often, when a breakdown occurs, the built-in speakers reproduce typical sounds - the TV clicks, crackles, etc. When the column clicks when you press the remote control, this indicates that the remote control is working normally, the reason must be looked for further. Some modern TVs have a built-in characteristic sound signal that responds to a lack of connection with another device or an incorrectly selected mode.

When the equipment constantly clicks but does not turn on, you should find out the peculiarity of these signals. A single signal when turning on the TV cannot be regarded as a breakdown. Depending on the manufacturer of the device, this sound signal may be more or less loud.

When TV cabinet components are made of cheap plastic materials, they can also produce the typical clicking sounds. This causes heating and then cooling of these parts. Such phenomena should not be considered a breakdown either, although this can be quite annoying.

When the TV still fails to turn on, but it clicks, the fault probably lies in the power supply, which stops the equipment from starting. This can be determined as follows: when a clicking sound occurs after pressing the start button and disappears after turning off the TV, the likelihood of a breakdown of the power supply or other internal part is very high.

• 10 best TVs with a diagonal of 40-49 inches according to customer reviews
• 10 best TVs with a diagonal of 50-65 inches according to customer reviews
• 12 Best Sony TVs of 2021
• 12 best Samsung TVs according to buyers
• 13 best TVs for the kitchen

TV won't turn on after factory reset

If your TV doesn't turn on after a factory reset, it's likely gone into standby mode. To get out of it, we also remove the plug from the socket for 7-10 minutes so that the equipment is restored to working condition.

TV screen does not turn on

If the TV screen does not turn on, the following may have happened:

• The inverter is broken. If the screen is not completely black, but the picture is transmitted with great distortion, and the sound is transmitted with a delay, this indicates a breakdown of the inverter. To repair a unit, you need to have a good understanding of electronics.
• The power supply has failed. To determine a breakdown, you need to ring each contact group. The TV case is also disassembled, wires and capacitors are inspected. If there is damage on the wires and the capacitors are swollen, the power supply will definitely have to be replaced. If everything is in order with the listed components, you need to test the voltage. In most cases, the power supply needs to be replaced.
• The problem is the backlight. To determine if this is the case, take a hand-held flashlight or use the flashlight on your phone, turn on the TV and hold the light up to the screen. If the image appears, it is definitely a problem with the backlight.
• The matrix is ​​faulty. In this case, one half of the screen is black, and the other has stripes. The matrix fails due to indentation or falling of the TV. It is not advisable to change it; the cost of repair will be almost the same as the price of a new TV.

The best option for the listed breakdowns is to contact a service center.

The TV does not turn on with the power button

If, when you press the power button, the indicator does not light up and the TV does not start working, most likely the element is broken, or there is a problem with the contacts or wires. In the same case, the TV does not turn off with the button. If the button is broken or stuck, it will need to be replaced.

A number of equipment models have an option to lock the switch on. You need to check whether this function is accidentally enabled. If the TV does not respond to either pressing a button or using the remote control, the problem may be hidden in the power supply to the control board. This malfunction occurs due to swollen capacitors. The board is checked using a tester by measuring the resistance.

If a button malfunctions, it is replaced. To do this, they carefully desolder it, and then put a new one in its place. It is difficult to do this without special skills and knowledge. It is better to immediately contact professionals who will carry out qualified repairs using original spare parts.

Causes of malfunction of TVs of different brands

There are several types of TV devices: plasma, liquid crystal, LED. Nowadays, there are several leading manufacturers of equipment, and each of the companies has its own characteristic features.

If equipment from any company breaks down, the principle of checking is the same; look at everything according to the plan described above. If the problem is not solved, and the indicators work in some peculiar way, study the instruction manual; perhaps the manufacturer has described the supposed reasons.

So, Supra TVs break down due to frequent problems with microcircuits, Samsung's power supply is often damaged, and Philips can turn off due to overheating.

If the problem cannot be accurately determined, contact the service center staff for help. Do not throw away the warranty card - if you present it, you will receive assistance for free.

Subscribe to our Social networks

TV repair in a service center

Due to the development of information technology, TV malfunctions are becoming more numerous, and special skills and tools are required to eliminate them. If earlier we could disassemble the equipment ourselves, taking a screwdriver and identifying the cause without calling a technician, now contacting a service center in some cases is the only way out to keep the TV working.

Our service center specialists understand all TV models and will quickly identify the problem and eliminate the cause. In our work, we use modern equipment that allows us to reliably identify the breakdown and eliminate it, as well as determine the malfunction of other TV modules.

TV chips

The worst thing that could happen to an LG TV is a breakdown of the chip components. Electronics are quite capricious, so diagnosing and repairing such parts is a task that only LG service center technicians can do. In addition to the fact that intervening in complex operating circuit systems will require years of experience, you also need a professional tool.