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LCD TVs - LED

Television turns on but the HAIER VLC79003.30 condensers are burned

MrMarco
hace 5 años
hace 5 años
Hi guys, the problem with this TV had several condensers exploited or burned and I replaced them with new ones. It continued to turn on the TV and within 1 to 3 minutes the new condensers began to explode, which I put all the secondary school nearby to the burned condensers and I did not get leaks in any part of the circuits of the same. What could be the fault? Or where could it be the short circuit of the same one that causes the explosion? I'm a little desperateooooooooooooo .............
TobíasTv
TobíasTv
13.721
hace 5 años

did you change the small electrolytic of primary, tl431 and opto?

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MrMarco
hace 5 años

Sorry, I will explain to you another thing that I have not said, is that I realized that the capacitors that exploded before the replacement are 25v 1000uf and then investigating a bit I saw that this plate originally uses 35v 680uf capacitors. The one I replaced is 25v 1000uf

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TobíasTv
TobíasTv
13.721
hace 5 años
hace 5 años
Hi, Marco, don't despair, you have the source without control, do you have the diagram?
MrMarco
hace 5 años

I could not get the diagram since there was one there published on a page but I could not download it because you have to pay to download them

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TobíasTv
TobíasTv
13.721
hace 5 años

download it from here, don't forget to leave a like in the diagram section, I just uploaded it for you
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https://www.yoreparo.com/tv/televisores/lcd/manuales/5837727/haier-l26f6-l32f6-l42f6-sm-diagrama-y-data-eeprom

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MrMarco
hace 5 años

Thanks friend. Downloading and I will look at the diagram and I will tell you shortly. By the way I am new learning to repair televisions I did an electronic but basic course.

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TobíasTv
TobíasTv
13.721
hace 5 años

give it to me, tell me the code on the plate of the capacitors that burst so I see it and I guide you

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MrMarco
hace 5 años

Sorry, I will explain to you another thing that I have not said, is that I realized that the capacitors that exploded before the replacement are 25v 1000uf and then investigating a bit I saw that this plate originally uses 35v 680uf capacitors. The one I replaced is 25v 1000uf

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TobíasTv
TobíasTv
13.721
hace 5 años

put the polarity of 35 eye !! but the important thing is to know what voltage the source has to deliver, you still don't mention what capacitors are

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TobíasTv
TobíasTv
13.721
hace 5 años

give it, my luck goes for what solutions, I hope yours;)

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TobíasTv
TobíasTv
13.721
hace 5 años

always use 105º electrolytic;)

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MrMarco
hace 5 años

Does the printed code on the board refer to you? If so, they are: c19, c20, c21, c22, c36, c39, c93. These are the places that were burned first, after the replacement of the same, the c19 was burned and the c20 had to be disconnected immediately so that I will not finish burning the others. I await the answer friend.

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TobíasTv
TobíasTv
13.721
hace 5 años

understood, are the 24 volt filters, check that the source delivers just 24 volts, if the voltage is higher replace PC3 and U4, always rely on the manual that I uploaded

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MrMarco
hace 5 años

I tell you that it does not mark neither the 24v nor the 12v without clearing it.

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TobíasTv
TobíasTv
13.721
hace 5 años

arm it and try, just a moment, if you see that the voltage goes over 24 unplug and go through PC3 and U4

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MrMarco
hace 5 años

Friend already tried and if it goes from voltage 25.6 to 26+, then I will have to replace PC3 and U4, but I live in Venezuela I will remove that 2 pieces and see if I manage to get it, by the way I will not open replacement for that two circuit?

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TobíasTv
TobíasTv
13.721
hace 5 años

no, the tension seems correct to me, I imagined 40 volts, hahaha, with those of 35 you will be fine, try how it goes

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MrMarco
hace 5 años

Amigo effectively tried again marked me maximum 26.2 and exploded another capacitor; I will not be able to replace all the capacitors according to the diagram that those who go with 680uf at 35v originally go to these values (which are those of C19, C20, C21 and C22) and had adapted them to 1000uf to 25v, now those that go with 1000uf at 25v these values originally go (which are those of C36 and 39 respectively) and they had adapted it to the same value. Now my question is: will it be that the 1000uf at 25v that adapted it to all these capacitors mentioned above, is the alteration of the voltages possible?

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TobíasTv
TobíasTv
13.721
hace 5 años

you are putting them with the polarity well, make sure that the negative is to ground and the positive where the tension should be

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MrMarco
hace 5 años

Friend another question, but I can get the capacitors from 680uf to 35v can be placed from 1000uf to 35 v?

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TobíasTv
TobíasTv
13.721
hace 5 años

Do not hesitate, it will work the same, I have in the drawer of 470 and 1000
220, and 330 I put 470, from there up to 1000, look at the polarity tension and that they are 105º successful

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MrMarco
hace 5 años

Thank you friend after you test with the replacement I write here to see if it went well or not! Thank you very much for your valuable help :)

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TobíasTv
TobíasTv
13.721
hace 5 años

I am habitue of the forum, when you write here I will be notified, hug and good luck with the source

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MrMarco
hace 5 años

Hey do you know about pc motherboard repairs? Tomorrow I will post the question about that so you read all the problem my motherboard has!

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TobíasTv
TobíasTv
13.721
hace 5 años

ask here
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https://www.yoreparo.com/computadoras/

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MrMarco
hace 5 años

Hello friend, good day, I have not yet bought the condensers since I don't have the money Later I confirm if I am doing well or not.

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TobíasTv
TobíasTv
13.721
hace 5 años

Quiet Marco, you are sure to walk;)

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MrMarco
hace 5 años
hace 5 años
https://www.yoreparo.com/computadoras/fuentes-ups/preguntas/5875883/atx-power-supply-modelo-ax600-n-item-pw610fs Check out please!
MrMarco
hace 5 años

Friend Tobias, thank you very much for your great help.

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