Samsung equipment is popular all over the world, but even top devices can suddenly fail. In most cases, troubleshooting will require the help of qualified and experienced service center employees, but sometimes a simple layman can handle the “repair.” The first and most important stage of repair work is diagnosing and finding out the reason why the Samsung TV does not turn on.
Having identified the problem, we will soberly assess the situation and decide whether the services of a specialist are really necessary or whether the breakdown can be fixed on our own.
Select a fault to view typical faults
Does not turn on
1. The 220 volt network connector has become loose or unsoldered, 2. The power supply has burned out, 3. The control unit requires repair (defective, “died” or burned out).
No image
1. The inverter is burnt out, 2. The LEDs or backlight lamps are burnt out, 3. The image forming unit is broken.
No signal
1. The system board is faulty, 2. The antenna input is loose or unsoldered, 3. The TV tuner has stopped working.
Can't see the connected device
1. The connector is loose or unsoldered (USB, SCART, HDMI, tulips, etc.), 2. The Wi-Fi or Bluetooth module is faulty, 3. Incompatible devices.
Doesn't change channels
1. The system board needs to be re-flashed, 2. The control unit is dead, 3. The TV tuner needs to be repaired.
How to identify the cause of the problem
The search for inoperability problems should start from the outside and end inside the device itself:
- First, check the outlets and power cord. We are looking for kinks and abrasions.
- Inspect the case for mechanical damage resulting from a fall or other force majeure.
- We examine the LCD matrix to see if there is a characteristic “cobweb” of broken glass.
- We sniff to see if it smells burnt.
- For those who boldly hold a screwdriver in their hands, open the back cover of the Samsung TV and visually inspect the boards to see if there is any mechanical or thermal damage to the chips.
- If channels turn on poorly and for a long time (or not the first time), most likely the operating system is to blame. Modern devices are equipped with the simpler and more functional Tizen OS, but it is not without its drawbacks.
It is best to entrust detailed diagnostics to specialists who, from their own experience, know what a motherboard, voltage regulator, scan module and TV processor are.
A new device from a store is unlikely to be faulty. Therefore, before using it, it will be useful to read the contents of the quick start guide and make connections in accordance with these instructions.
Inverter problems
The inverter on a SAMSUNG TV may burn out. It is responsible for supplying voltage to the backlight lamps, adjusting the image level and brightness, protecting microcircuits and boards from overloads and short circuits.
If the inverter is faulty, the display will stop displaying light. This means that instead of a video image, the TV will display a regular black screen.
To determine if the inverter is broken, you need to conduct a visual inspection of the main components of the TV, which are located on the circuit board under the back cover. To check this component you will need a multimeter - a special device for measuring various electrical quantities.
The inverter can burn out transformers, lamps or controllers located on the lamps. The burnt part must be replaced with a new one. In some cases, you can repair the inverter - you will need a soldering iron for this.
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.
Selecting the correct operating mode
In a situation where the Samsung TV does not turn on and the red light is blinking, you can safely rule out any power failure. Quite often, users simply choose the wrong operating mode for the device. It is worth considering that every modern TV equipped with an LCD monitor can operate in several states at once. The mode can be: standby, DVD or game.
Therefore, in this case, it is necessary to study in detail the instructions for a specific Samsung model and clarify exactly how to switch the TV. It is quite possible that the device is simply operating in standby mode. It is in the sleeping state that the screen goes dark, and the indicator light continues to light red or green.
To correct the situation, you need to try different modes. In some modern Samsung models there is a special key, when pressed you can clarify the current state of the system. It is also worth checking the connectors into which plugs from game consoles or players are usually installed. If the game mode is selected on the device, but the device is not connected, then the Samsung LCD TV itself does not turn on, although the indicator light works. However, things are not always so rosy.
Not working remote control
No matter how funny it may sound, the whole problem sometimes lies in a non-working remote control. Replace the batteries in the remote control or take an analogue (from another TV or a virtual remote control application for a smartphone) and try turning it on again. Please note that the indicator of a working “lazy machine” will blink or light up in a different color when you press any of the buttons. You can also always use the navigation keys located on the side or back of the case.
When the help of a specialist is not required
Very often, owners of television receivers panic and begin to call a technician at the slightest problem with their device. But if you calm down and look at the situation soberly, then there may not be a breakdown of the equipment. It is necessary to check the behavior of the television receiver based on some symptoms.
Mode check
You need to check what mode the TV is in. For example, Standby mode is a standby mode, and you can find out if it is turned on by looking at whether the red light on the unit panel is lit. It should be remembered that it is not recommended to leave the television receiver in this mode for a long period of time, since when the unit appears to be turned off, all circuits of the power supply remain energized. If a power surge occurs in the power supply network, all primary circuits will burn out, after which the television receiver will refuse to turn on. Therefore, the unit should be turned off using the button located on its panel to reduce the risk of electronic burnout.
Not working remote control
If you see an indication, but the TV does not respond to commands from the remote control, you can try to turn on the device using the control panel located on it. If you succeed, then the remote control is faulty. Although, in principle, it cannot break, except that a fall may break the quartz resonator, which will have to be replaced. Most often, the batteries in the remote control run out or run out. In any case, it’s worth disassembling the remote control and trying to fix the remote control malfunction with your own hands.
No standby indication
In a situation where there is no indication, and when you press the button nothing happens, you do not hear clicks and do not notice the blinking of the LED, then you can assume that the socket is faulty. Of course, you can try to connect the device to another power source, but if this does not help, then, without special knowledge and qualifications, you will not be able to repair the television receiver with your own hands. Even replacing a regular fuse will cause you difficulties, since they are not so easy to find in modern TVs. Therefore, calling a specialist will be the right decision.
The indicator blinked once
If the indicator blinks once, after which it continues to glow steadily, or its color changes, this may mean that the device is in operating mode: either AV or in PC connection mode. Therefore, you will need to switch the unit to TV reception mode.
Incorrect settings
Some specific TV functions may have been activated unintentionally. For example, child protection that blocks the activation of equipment without a remote control. It is worth carefully studying the settings to see if such functionality is running. An extreme case is to reset the settings to factory settings.
TV lock enable menu
Signal problems
Rain, heavy snow and other bad weather affect the quality of the broadcast signal. Ripples, artifacts, or noise appear on the screen. It is necessary to wait for the end of the bad weather, and if the situation has not changed, then check the antenna (plug, cable, housing).
Power surges
This problem is especially relevant in private homes. Strong surges can damage any household appliance. To avoid such troubles, it is worth acquiring special equipment - a voltage stabilizer.
Voltage regulator
Power button
If the equipment turns off almost immediately after switching on, then the problem may be in the button. Other symptoms of a malfunction of the latter are a loud click when activated and non-functional indication. You can replace the power button yourself; fortunately, many manufacturers have implemented this feature in their models.
Periodic reboot
This is a typical glitch in the platform. The problem can be resolved by updating the firmware to the latest version or completely reinstalling it.
The power button on the panel does not work
If, when you try to start the display from the control panel, the red LED stops lighting or you hear a characteristic clicking sound, then the whole point is that the internal module is blocked due to a power failure. It will be extremely difficult to cope with such a problem on your own, so you should immediately contact a specialist and not waste your time.
The custom “child lock” setting will also not allow you to activate the TV from the control panel, so before calling a technician, it would be a good idea to try to turn on the TV via the remote control.
What to do if the TV does not turn on
A TV, like any other complex equipment, may periodically malfunction. However, as a rule, there is no relationship with its service life. In some situations, when the Samsung TV does not turn on, the red light blinks or the monitor immediately goes off, the problem may be hidden in incorrect switching of the relay or other components. Such breakdowns are typical for old TVs with picture tubes. Newer LCD models are distinguished by complex fillings; accordingly, self-repair of such devices becomes more difficult. However, it all depends on whether there was a hardware failure, or the user was simply fiddly with the settings.
It is worth noting that in some situations you can actually troubleshoot problems yourself. However, in this case you need to be confident in your knowledge and not take unnecessary risks. First of all, you need to try to determine why the Samsung TV does not turn on. The malfunction can manifest itself in different ways.
Unstable operation of the indicator
A blinking LED on a Samung is a sign of unstable operation of the device’s battery or a power failure. The reason should be looked for in the socket or in the cable connecting the TV to the current source: such mechanical damage can be easily noticed even by a person far from repairing electrical equipment.
A flashing indicator indicates a failed power supply, which is hidden inside the case.
In this case, you should not try to disassemble the television receiver yourself, because you still will not be able to replace, for example, a non-working transistor or capacitor located on the motherboard.
If the TV does not turn on and the LED does not light up
In such a situation, there are a huge number of reasons for the problem. The most common of them is a lack of voltage in the outlet. In this case, you need to purchase a special tester or a screwdriver with an indicator and check the voltage.
If there really is no power, then the answer to the question of why the Samsung TV does not turn on is obvious. In this situation, it is worth trying to turn on and off the electricity in the room using a panel. If the problem cannot be solved, it is recommended to contact an electrician.
Another common cause of such a breakdown is damage to the extension cord (if one is used when connecting the TV). If your old Samsung TV won't turn on, the fuse may have blown. However, such problems are unique to kinescope models.
In addition, any other component responsible for the operation of the device could fail. Therefore, in some situations you cannot do without a Samsung TV repair service.
Infinite reboot
This malfunction is typical for Samsung devices that support Smart-TV technology: endless rebooting is a consequence of a firmware failure or unsuccessful update. Any user can perform flashing: just follow the instructions that are included in the factory kit for the device.
Consultation with a service center will be required if reinstalling the software does not produce the expected results: a thorough diagnosis of the device and a targeted set of repair work will probably be required.
The matrix cable is damaged
The image on a SAMSUNG TV may disappear due to damage to the matrix cable - a set of contacts and wires that connect the board that forms the image and the display.
To check the functionality of the loop, you need to perform a visual inspection of the wires. Damaged areas can be re-soldered, this will help restore the screen operation. At the same time, there is a high probability of repeated breakdown of the matrix cable.
Therefore, the best solution to the problem is to replace this component with a new one. When choosing a matrix cable, you need to pay attention to the TV model - the part must be original and compatible with the TV brand.
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.
When to contact a service center
Hardware failures on a Samsung TV can only be fixed by a professional engineer. The average user will be able to solve external problems, so disassembling the device yourself is by no means a good idea.
Software malfunctions of Samsung Smart TV are also not always possible to fix with your own hands. To update the firmware, you must first download it and save it to a flash drive or built-in hard drive. Not every user can cope with such a task.
Service center engineers have special equipment at their disposal and also know how to properly disassemble the TV. Now let’s look at the situations in which you need to contact the experts.
The TV does not turn on from the panel button
If the TV does not start after pressing the power button located on the panel, you should pay attention to the standby indicator. For example, if it turns off when the button is pressed, this indicates that the internal locking has been activated.
Do not rule out damage to the button itself or the cable that provides the connection. If, when pressed, the button literally falls into the panel and does not click, then it needs to be replaced. You absolutely won’t be able to do this yourself, so you just need to call a specialist.
The indicator lights up red
If the light is red but the TV does not turn on, this means that it is in standby mode. We have already figured out how to fix this problem. In some situations, the indicator glows green, but then turns red again. This indicates that the central processor generated and sent out an incoming signal to turn on to other modules.
Due to the fact that one of the nodes breaks, the command is not executed. For example, the problem lies in the power supply, so the TV does not start. The central processor does not receive confirmation that the command has been executed, as a result of which it cancels the signal to turn on the TV, returning the device to sleep mode.
The LED may constantly change color, but the TV will not turn on. The cause of the malfunction is the inverter or transistor. You need to contact the service center to have specialists replace the faulty modules.
The indicator is green, but the TV does not turn on
If the indicator lights up green, but the TV does not turn on, then specialists will conduct a thorough diagnosis. The check begins with testing the motherboard; in particular, the incoming voltage is measured using special equipment. In addition, the execution of commands to illuminate indicators, turn on the TV, etc. is tested.
When the light comes on, indicating operation, but no signals are received from the main board, this may indicate problems with the software. Try to turn on the device using the remote control or by pressing the button located on the main panel.
A hardware failure of the motherboard can be resolved by replacing the faulty component. If the voltage is completely fine, then the specialists will reset the user settings and then install the updated software.
The indicator flashes regularly
A constantly flashing light is an indicator of a failure, but you need to specify the problem, which can be very difficult. To determine the cause of the blinking indicator on the TV, a comprehensive diagnosis is carried out. Using an oscilloscope, the power adapter is checked, and the performance of the converter, which is located on the motherboard, is also tested.
Often the red light blinks due to voltage problems. For example, there was a short circuit in the contact circuit.
The TV takes a long time to turn on
If the television equipment takes an unusually long time to turn on, this indicates a malfunction of a particular unit. For example, if you use a device with a liquid crystal matrix, then the factors will differ significantly from the same LED models.
Determining why the TV does not work well and does not turn on immediately is extremely difficult, especially if you do not have experience in repairing equipment. Considering the circumstances, it is more advisable to contact a service center, whose employees will be able to quickly determine the cause of the malfunction and normalize the correct operation of the device. They use not only professional equipment, but also licensed software.
Additional problems encountered when switching on
Additional problems include taking a long time to turn on or reboot the device.
If Samsung takes a long time to turn on, then this problem indicates a malfunction of one of the screen blocks. Finding out the reason is quite difficult, since special diagnostic equipment is required, which only technical centers are equipped with.
If the panel turns itself on and off, then many factors contribute to this. Some can be eliminated on your own, others require consultation with a specialist.
The most common reasons:
- Dust is one of the most common causes of this problem, dust deposits accumulated inside the TV. As a result, the contacts close and the device turns off on its own. To fix the problem, you need to open the back cover of the plasma and use a vacuum cleaner to remove dirt.
- Device update - the TV needs a software update, this action is usually performed by a wizard.
- Capacitor failure - if there is a leak in the power supply and it is necessary to replace the capacitor, then this operation should only be performed by a professional, since the capacitor is explosive.
- Overheating of the panel - often occurs due to voltage surges; as a result, the LEDs or the insulating winding may fail.
The backlight is broken
A black screen on a SAMSUNG TV may appear due to a broken LED backlight. When the LEDs fail, the video image ceases to be displayed on the display - the polymer liquid crystal layer ceases to be illuminated.
Solving the problem on your own is difficult, but possible: here are detailed instructions. This requires special equipment and parts. To accurately correct problems with LED backlighting, you need to take the TV to a certified service center.
