To determine why the TV does not turn on, you need to conduct a comprehensive diagnosis. This problem can be caused by both software failures and hardware failures. Provided that you have special skills and tools, the user will be able to independently restore the correct operation of the TV. In order to identify damaged nodes, we will analyze the most common symptoms, as well as their meaning.
No electricity
Symptoms: indicators do not light up, control buttons do not respond
This is one of the few problems that the TV owner can easily fix on his own, even if he does not have special tools. If the indicators do not light up, then most likely the device is not receiving power at all. Naturally, absolutely fatal cases such as a power outage throughout the house or entrance are not considered here.
First, check the power cable: visually everything should be in order, the plug is intact and undamaged, the wire is not pinched or melted anywhere, the plug is not hot to the touch. If the problem is in the plug, then either replace it, or, if it is not removable, replace the entire power cable. If the power cable is pinched somewhere, then it is better, of course, not to risk it and replace it.
It is quite possible that there are some problems in the electrical wiring where the TV is connected: this is easy to install - plug into the outlet the power cord of some other electrical appliance that you just checked in another outlet. You can try plugging the TV into a different outlet if the cable reaches it or you have a suitable extension cord. If no devices in the outlet work, first look at the electrical distribution panel: if you have a separate circuit breaker for sockets in your apartment, then it could simply be “knocked out”, and just turn on the switch; However, the question remains, why did it get knocked out? In other cases, you are still better off calling an electrician. If other devices do not work in other sockets, most likely, the power supply circuit breaker for the sockets throughout the apartment has been knocked out - you again need to go to the panel. By the way, if after turning on the TV again, the machine “knocks out” again, then your affairs are bad: such symptoms indicate the presence of a short circuit in the electrical network of the device, and here you cannot do without a technician.
It is possible that your power supply voltage is outside the limits allowed for this model: usually it is from 200 to 240 volts. If you have a voltmeter, check the voltage in the outlet: if it is not OK or there is nothing to check, you will have to call an electrician.
Power light flashes
The flickering LED indicator indicates that the TV device independently determines the type of malfunction. As a rule, the red light on the TV screen flashes a certain number of times - this is a way of conveying a symbol of a breakdown.
To decrypt the signal, you just need to use the instructions that are included in the basic package. Find the section with the designation of all types of breakdowns and their indication. Based on the information received, you can take appropriate steps to normalize the launch of TV.
Another reason for this symptom to appear is that the TV is connected to a computer and is used as a monitor. If the PC automatically switched to sleep mode or was turned off, attempts to turn on the TV from the remote control will be accompanied by flickering of the indicator. Probably, the TV acts as a second monitor.
As you understand, the solution to this problem is elementary, just wake up the computer from sleep, to do this, press any key on the keyboard or move the mouse. The TV device is working properly, it just receives an image from a different source.
Sometimes the protection is triggered and the SAMSUNG TV does not turn on, and the indicator blinks. The reason is hardware malfunctions or software failures; it is possible that the device simply was not brought out of sleep mode.
Power surge
If power surges in your apartment are a common occurrence, then be prepared for the TV to react to them. Some models have protection against voltage surges: after this, the device does not turn on for several minutes. But if even after 10 minutes the TV did not work, then the accident did not pass without a trace for her:
- fuse burned out;
- due to a short circuit, the wiring could fail;
- The electronic control board or other electronic element of the TV has broken down: electronics are especially sensitive to voltage surges.
In any case, in such a situation, you should contact a specialist, even if it is just a blown fuse: firstly, modern TVs may have several of them, and, most importantly, you should not get into a complex modern device without special training.
And another piece of good advice: if you constantly experience power surges, buy a voltage stabilizer and connect your TV and other sensitive household appliances to the mains through it.
When to contact specialists
In the event that to repair the TV you need to open the device, change parts or repair them, you should seek help from a professional technician. Repairing an electrical appliance with your own hands without the necessary skills and a diagram of the device is quite dangerous, as you can aggravate the breakdown.
Backlight burnt out
Often the problem is that the sound works, but there is no picture on the TV. This represents one of the most common problems with Samsung TVs - backlight defects.
To fix the problem, you will have to change the most expensive part in the device - the monitor, or contact a specialist to repair this part. When LED lamps burn out, the backlight inverter fails (this is typical for both LCD devices and plasma TVs). In this case, the electrical energy ceases to be converted to the required level at which the image appears on the screen. The monitor will only light up if you insert a new LCD panel.
TV does not respond to buttons
The device may not turn on when you press the power button located on the panel. There are several reasons for this:
- Internal blocking has started. In this case, the TV will turn off when you press the power button. To remove the lock, you must enter a special combination (it is indicated in the instructions for the TV) from the remote control, reconfigure the channels or reflash the device. For flashing, you should contact a specialist.
- You should check the standby indicator. If the red indicator light flashes when the user presses “start,” then the problem is in the power supply or other internal components.
- The start button itself or the cable that provides the connection may also be broken. If the button does not click and does not turn on, or falls into the panel, then it needs to be replaced.
Replacing the power button yourself is extremely difficult for someone who has never repaired a Samsung. Therefore, to obtain the service, you should contact the service center.
The indicator turned red
If the indicator is red and the device does not wake up from sleep mode, it means that the device is in standby mode. Instructions for exiting the mode are described in the instructions for the TV.
Sometimes the indicator starts out green and then turns red. This indicates that the central processor received a signal to turn on and sent it to other modules. When one of the elements in this chain breaks, the command does not reach the recipient - the TV remains turned off. The problem may lie in the power supply, which directly affects the startup of the device. If the confirmation is not accepted by the central processor, switching on is not confirmed and the device returns to sleep mode.
Also, the LED may constantly blink, switching from one color to another, but the device will not turn on. In this case, the inverter or transistor is broken. The service center will select the necessary parts and put them in the right places.
The indicator is green, but the TV does not turn on
If the indicator color remains green, but the device is still turned off, diagnostics are required at a service center. During system testing, the motherboard is tested using equipment to measure the incoming voltage. They check how the device executes commands to illuminate indicators, turn on/off, and much more.
When, while the light is on normally, which indicates the device is working, the signal from the main board does not reach the processor, this indicates problems with the software. In this case, you need to start the device using the remote control or a button on the panel. If you cannot turn on the TV, take it to a service center.
A motherboard failure can only be corrected by replacing this component. If everything is in order with the component, the center staff will reset the user’s settings and install new software.
The indicator blinks constantly
If the indicator light flashes continuously, this indicates violations that can only be identified with the help of comprehensive diagnostics. Specialists check the power adapter using an oscilloscope, and also test the performance of the converter located on the device’s motherboard.
The indicator will often flash red when there are voltage problems. These include: short circuits in the contact circuit, overloads, network outages, due to which malfunctions may occur, etc.
Turning on the TV for a long time
When the device is turned on for a long time, the problem is that one of the nodes is damaged. The internal filling of a technical unit equipped with a liquid crystal matrix differs from the device of LED models. Therefore, the reasons for long switching times may be different:
- contacts have diverged;
- the power supply has failed;
- the capacitors have swelled or run out;
- the inverter is faulty;
- The frame and line scan unit is broken.
Even if the device works, but the channels cannot be switched the first time, most likely there are problems with the operating system of the device.
Finding out why the television receiver does not turn on immediately or works intermittently is especially difficult for those who have never repaired equipment. In such circumstances, you should contact a service center, where specialists will help you quickly identify the cause of the breakdown and establish adequate operation of the device. Service centers use not only professional equipment, but also licensed software.
Do-it-yourself repairs
Below are the possible reasons for the Samsung TV not working, for which the help of professionals will not be needed to eliminate:
- Standby mode. In Standby, the device continues to work, although its display remains inactive. Pay attention to the panel LED, which will glow red in standby mode. To start the TV, you just need to exit standby mode by pressing the power button on the case or remote control.
- Faulty remote control. Try replacing the batteries in the remote control or use a smartphone with a special utility from Samsung installed (TV-remote) to start the TV.
- Broken socket. If the indicator on the control panel does not light up, connect the TV to another power source and start it as usual.
- AV, HDMI or wireless connection is active. Perhaps the television display is configured to mirror the interface of a computer or mobile gadget, so launching regular television is not available. Disconnect all devices and switch the mode to watch TV.
- Weak signal. A “black screen” is a consequence of bad weather (thunderstorm, blizzard) or a malfunctioning external antenna. In some cases, it is enough to simply wait a few hours until the signal quality improves automatically.
Some ways to troubleshoot problems on your own will be discussed in more detail below. If self-repair does not give the required results, under no circumstances should you panic - remain calm and try again to soberly assess the situation.
Protection action
It is possible that your equipment will turn on, but after a few minutes the screen will go out again. This fact suggests that when the lights were turned off, the device was in “sleep mode”, and completely disconnecting it from the network can fix the problem. Unplugging the cord from the outlet will be enough to completely restore its operation. Voltage drops are constant. In this case, it is worth purchasing devices that prevent such situations. Among them there are those that will not only prevent emergencies, but will also temporarily support the operation of the device when the electricity is turned off.
Specialist help
The average user can only cope with those problems that do not require opening the television case - it should be understood that attempts to independently repair the elements of the motherboard can lead to complete failure of the device. Professional services will be needed if:
- The Samsung screen does not light up either when using the remote control or using the buttons located on the device itself, and the wires are intact.
- The display shows no signs of life, although the special power indicator lights up green. Perhaps the problem lies in the board, and only a specialist will be able to check the correctness of the current supplied to it or identify any other failure.
- The indicator lights up either green or red, which usually means a failure in the power supply system. The transistor or electrical adapter will need to be replaced.
There are other reasons for the malfunction of your TV, which an experienced technician will investigate, and in order not to aggravate the situation, it is recommended to immediately contact a Samsung service center.
What to do if the TV does not turn on?
If Smart TV does not turn on, the first thing you should do is find out the series of the television device. From experience, older TVs that start with UE, like UE40D5000PW or UE40EH5007K, or LE (LE-32S81B, LE40B530P7W) and others, are more likely to experience physical failures than software ones. All TV owners: LE40B530P7W, LE32C450E1W, LE26B350F1W and other similar models should concentrate on diagnosing the power supply system and signal transmission: cable, socket, etc. This is the most likely reason why the TV does not turn on.
Models like UE50NU7090UX and similar modern ones (after 2021 release) most often encounter software problems: firmware failure, damage to the operating system, etc.
Important! We recommend checking all possible causes of breakdowns rather than focusing solely on one category. The following instructions will help you with this.
Conclusion
It is quite possible to repair a Samsung TV with your own hands if it does not turn on. It is necessary to carry out diagnostics and identify what exactly the problem is. Be sure to exclude the following factors:
- lack of electricity;
- non-functional socket;
- burnt out power supply;
- power surges in the network;
- dead batteries on the remote control.
Next, move on to more complex manipulations and find out why the red light is blinking and the TV does not turn on.
