TV does not turn on: causes and repair

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2018-03-20 17:33:13

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Like any other equipment, televisions can fail suddenly fail. These crashes occur regardless of the timing of operation of the device. For example, sometimes does not turn on the TV. When trying to turn it back on blinking different lights, and the clicking of the relay. There may be other symptoms. Let's look at why the TV refuses to work and what to do in such a situation.

Common causes of failures

This problem may occur for a variety of reasons. It happens that the LEDs are flashing as usual but the TV still does not want to run. Also the indicator light is red, but the device is not amenable to remote control and not included. Samsung TV does not turn onOften does not turn on TV with remote and with button. On the case the indicator is not illuminated. Another symptom – inside the case something clicks, buzzes. The device produces different, sometimes quite strange sounds, but still won't start.

Blinks

If they are on the body flash, then the device self diagnose and soon found out the cause of the problem. Often, the different models can be observed that the lamp or the led flashes a number of times. So it reports a specific error. Part codes can be found in the operating instructions. TV manufacturers such as “Sony”, “Phillips”, “pioneer” and a self-diagnostic function. The CPU on the data bus receives information from the main devices and blocks. If the detected faulty node, the processor will block commands. So if you do not turn on the TV “Phillips”, but the indicator flashes, you must read the error and decode it. Then you can try to fix the problem. Also, this symptom shows up when TV-the panel acts as a monitor of the computer. If the PC is left in sleep mode or turned off, then when you press the power button on the remote control, the LCD panel will flash a few times led.

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The lights are on always

Luminous diode informs user that the power supply unit normally receives the supply voltage. What should I do if I turn on the TV and does not respond to signals from the control panel? The first is to try to enable it by using the buttons on the TV. Possible malfunction caused by incorrect operation of the remote control or some error associated with it. But it does not blame TV.not included lg TV If you do not turn on LG TV and have similar symptoms, the whole thing in a ceramic resistance of 4.7 kω. It is located near the CPU – open. Replacing the resistor will help to restore the device. You can take several actions. First check whether the batteries in the remote control and not oxidized contacts. Next, check the infrared emitter and its integrity. Then the diagnose button. They can get stuck, causing the panel and does not respond to commands. If the TV is “Samsung” is not included, but the light is on, then the reason must be sought in electronic components. Something triggered a change in the properties of the capacitors, so the PSU can no longer provide the device's normal run. The only caveat – determining the localization of the fault will take some time. not turn on the Philips TVAlso, experts recommend to disassemble the remote and clean it inside. They often accumulate dust. It's not the best way affects the operation of the device. If the console was flooded with coffee, beer or any other liquid and can no longer work, then easier to buy a new one. If after pressing buttons on the control panel LCD TV will not turn on, then there are only two possibilities why it happened.

Security

This is one of the possible reasons. The TV in this case might attempt starts, however after a few seconds the screen goes off or completely stop responding to all attempts to run it. The main and popular reason of this problem – disruptions in the supply of electricity in the home network. Power system modern TV loves the quality and stable voltages. The most effective way of helping to solve this problem – this completely de-energize the device. You can do this by pulling the plug from the socket. After some time the device will be restored. If there are persistent problems with stress, then the best solution – turn on the TV using stabilizers, uninterruptible power supplies, or at least through a standard network filters. But best of all, if you want to avoid such problems, switch off the panel when leaving the house. Then you won't be wondering “why not turn on the TV”.

Malfunction in the processor

A Modern TV equipped with a huge amount of electronics. Schematically, they represent a small PC with a separate CPU, which controls all the important processors.not turn on the TV for Example, if you consider the concept of LED TV, it can be seen that the control voltage on the LED diode is received through the contactStand-by and the transistor. If there is a short circuit, the TV will not turn on. Then do not do without consulting the specialists in the service center. Of course, if you have the knowledge and necessary skills, you can try to fix the problem on their own. However, the trouble is that freely available there are no electrical diagrams TVs. And without them to fix the panel very difficult.

TV does not turn on, the LEDs are off

These symptoms are directly or indirectly related to the lack of electrical power. If just the lamp, then the device would be operated in normal mode (no readout). If this happens, then do not panic. First, you need to exclude all possible faults that are corrected independently. But there are situations and more complicated. For example, does not turn on LG TV and the problem lies in the breakdown of the resistor-fuse. not turn on the philips TVVia these resistors to the circuit the voltage is supplied +12 V. After replacement of the element TV is in normal mode.

There is No voltage in the socket

Sometimes quietly turned off the circuit breakers in the distribution boards. There is an abnormality in the socket. It is diagnosed using a dial indicator or a multimeter. If no power, check the machine. If not, change the connection.

Faulty extension cord

This is a common reason for why does not turn on the TV. why not turn on the TVTo Check you can just – from the wall outlet if the device works, and through the extension cord do not want to run, then the problem is clearly in the wire.

Invalid selection mode

Often it happens that people accidentally or deliberately chooses the wrong operation of the device. In this case, the TV may turn off and not turn on or go into sleep mode. In this case, will a factory data reset.

Faulty electronic components

As already mentioned above, if not turn on the Philips TV, this is due to the defective electronic components. For example, for some reason, burned resistors or capacitors. The actual problem – fuses. LCD TV will not turn onDiagnosis and repair of such faults is best left to professionals. Self-repair can be very expensive. If not turn on the TV “Phillips”, this is due to a broken capacitor in the power supply. As a result, the circuit 13 is fed In instead of the required 18.5 in. This is what often causes failure. Without the necessary knowledge to identify the problem by yourself is very difficult – is the work of service engineers.

Conclusion

If the TV is “Samsung” is not included (and this applies to all brands), it does not mean that it's broken forever. It can be revived with the help of simple methods. But if the problem is in the capacitors or resistor, without proper experience should not be taken for repairs.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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