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LCD TVs - LED

tv led led model EF4614FHD tries to turn it on and off

Ruddy Chaile PC
hace 5 años
hace 5 años
Hello friends of me I repair a TV to led admral model EF4614FHD arrived at my workshop, which tries to turn on and off, vertical stripes and turns off what I did check the led strips by strips and turn on all there are no led burned, then disconnect the cables of the LEDs of the source and I tested it with a light bulb in series and the bulb remained as if the normal TV was on, I plug in with the LEDs and the TV goes out, what voltage do I have to take and where? since I don't have much experience in lcd tv
Franki Lobaina
hace 5 años
hace 5 años
Friend when the TV turns off, does the LED also turn off? Does the TV fall into stby or still working? Do you comment that you see stripes, are they black or colored? Maybe you have a problem with the tcon, disconnect it and try it. When you put the focus the TV was on? It may be that you have led with small leaks and still turn on but the backlight control circuit does detect it. Answer me these questions and comment on anything else you notice to get a more accurate idea of the defect and keep helping. Greetings and luck
Ruddy Chaile PC
hace 5 años

hello friend frankis lobaina, thanks for being on the other side and when the tv I give power tilda the stamp led 10 times and turns on, it appears black and gray or white stripes in horizontal but lasts 1 sec and stays in stamp, disconnect the two cables that go to the source LEDs and turn on the TV and the TV is on, because the LEDs are not connected, there is a small filament, dim, in the light bulb, and it does not go out. for now I do not have a capacitor to test the filters, in case some are dry, I don't see swollen filters at the source, I already made a LED tester and probe strips by strips

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Franki Lobaina
hace 5 años

Friend as you say, it is possible that in some way the focus is eliminating the protection of the TV, do this test, disconnect the LEDs and do not put focus, leave the LED connector disconnected, turn on the TV, if it is not protected, do not It turns off, the problem is in the power or filtering of the 12 volt or the backlight control circuit, if the TV turns off you have problems in the LEDs, many times the LEDs have small leaks that are detected by the control circuit and Still they turn on with a tester, in this case you must replace the led

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Franki Lobaina
hace 5 años

To be more successful with this test, disconnect the tcon and remove the screws from the board, that is, separate the board from the TV chassis, comment on the details of the test to continue helping. Regards

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Ruddy Chaile PC
hace 5 años

hello friend franki lobaina sorry for the delay, I did what you said disconnect the tcom card and turned on all the LEDs and it does not turn off, then the problem is in the tcom, it is half complicated, I can not take voltage on this card as in others I take voltage in VGL, 6V ---- UVDT 16V ------ VGH 26V ------ in this tcom I complicate the avreviatures could you help me with photos to take voltages on this board

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Ruddy Chaile PC
hace 5 años

hello friend franki I want to inform you to solve the tv, buy the tcom and problem solved, I want to thank you for your contribution, for your knowledge a hug, thank you infinite thanks friend

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sanfalla
sanfalla
1.821
hace 5 años
hace 5 años
locate the "IC-6" integrated circuit 6 labeled "RT8525" ..... Touch pin12 and ground with the tips of the multimeter in AC mode and turn on the LEDs. you tell me and we continue
Ruddy Chaile PC
hace 5 años

Hello friend Sanfalla the little circuit you mention is on the meinboar card?

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sanfalla
sanfalla
1.821
hace 5 años

that model has only one card and is close to the connector that go to the led

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Ruddy Chaile PC
hace 5 años

no friend this tv has, a source board the other is the maiboar down the tcom the model is EF4614FHD so I couldn't find ic-6 integrated circuit 6 labeled "RT8525"

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sanfalla
sanfalla
1.821
hace 5 años

I understand is another version sorry let me see that I proceed

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