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TVs

lg50ln5710 black image

bryan gomez

hace 5 años

hello good morning everyone I have this screen which turns on the logo is seen and the LEDs go out there is image barely seen by the symptom stop are the led I did voltage tests and they are all the voltage 3.3v stanby 24v 12v and the backlight when when the LEDs illuminate I have a175v on side a and side b 175v and I proceeded to disconnect the connection of the backlight connector and it does the same for 175v and it falls does not remain stable and that is why it is my doubt that the voltage is not maintained that they recommend me to do more in advance thank you very much

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bryan gomez

hace 5 años

if u disarmed them in advance thanks what I have doubt that if it could be the source or flat the LEDs something else like putting false charge in the output for the led strips
since I saw in you tube that connect an emergency lamp the backlight voltages

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Friction

628

hace 5 años

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hace 5 años

You will have to disarm the TV completely until you reach the LED strips and there check that there are no burned LEDs. It is a very risky job, since you must remove the lcd panel and you run the risk of splitting it, if you are going to do it watch videos on youtube (there are several) where they show how to disassemble a TV until you reach the LEDs. Once the LED or LEDs are damaged, it will be a matter of replacing them. To make a test to turn on all the LEDs, disconnect the main from the source and connect the source to the network, all the LEDs should be turned on and this could also be done once the TV is disassembled to see which LED does not turn on so that See which one is damaged. regards

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bryan gomez

hace 5 años

Hi sorry for the delay, I uncovered and had strips of LEDs burned and brought others that adapted I got the originals and changed them turned on well but since it lacks the intention of light I will measure the voltage of laparas as I have and comment or that more advise me
since I also check in configurations if it would have activated energy saving and it is off
first of all, Thanks

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