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LG

Tv lg 21 turns on when it goes off it doesn't turn on anymore

hpiedr
hpiedr
80
hace 5 años
hace 5 años
Greetings, colleagues tv model ap20cb20a chassis sc-023a presents the following fault, the TV when connected turns on perfect and you can learn and turn off as many times as you want, but when disconnecting it from the current, bone, take off the main power. The TV does not turn on anymore and you have to wait a while, checking the 5 volt note that I get to the micro jungle 4.94 volt and turn on. When the TV does not turn on that voltage disappears. Check the 5 volt regulator is ok, check the filters and they are ok. Another data the + b measures me 128 volt. I require the diagram and some guidance. I also need a clarification, I got an Apple Green resistance and it has 3 colors brown, black, black. Ask how you read this resistor 10 ohm or 1.3 what is it that measures me. Send photo of this resistance
duqueelectronica
hace 5 años

It is a coil measures continuity being good ok

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eov47
eov47
665
hace 5 años

Hello, did you check the source? - all the tensions? - is it in standby? as they tell you above the photo is a "shock" coil of 10 mh.

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Jesus Duarte -  User: jes
hace 5 años

My friend .. Your question is about the coil or the problem of the TV ... it seems that the doubt is confused with the title of the question.

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Victor E
Victor E
65.783
hace 5 años

In the other post they told him the truth, it is a coil and now he asks again for a resistance. What are we left in? That is a coil, so the difference between what it measures and what it figures.

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hpiedr
hpiedr
80
hace 5 años

Victor friend the other TV that by chance was the same, had damaged was the flayback. Thanks to your support we could detect it.

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miguel 86
miguel 86
2.160
hace 5 años
hace 5 años
[color=#1abc9c] Here is a diagram, you can follow it better. https://drive.google.com/file/d/1D9C2HR3DE8OWuCzuLzLAvOR8gn9jGFKu/view?usp=drivesdk[/color[
miguel 86
miguel 86
2.160
hace 5 años

Friend had another pots open that I have not seen, you already gave a solution, I would have to give the resistance number so that it is in the forum as a repair, well clarified, greetings

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Victor E
Victor E
65.783
hace 5 años

like

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miguel 86
miguel 86
2.160
hace 5 años

It's all over you, regards

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hpiedr
hpiedr
80
hace 5 años

Miguel 86 in the other pots, although it was the same TV model, was not the same team. the resistance that was removed on another TV was to separate the source of the equipment and thus verify where the fault was.
In the other fault we detected that it was the flayback.
This time this TV turned on and after a while I paid it it didn't turn on anymore.
Although it is the same TV model, there are two different flaws.

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hpiedr
hpiedr
80
hace 5 años
hace 5 años
On this occasion and with the great help of each of you, I was able to discover a capacitor that was devalued, C814 220Mf X 160volt. ready.
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