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TVs

Tv Lg 26lh201c blue led without sound and without image

maheji

265

hace 5 años

Hello, I have a lg 26lh201c television that has the following symptoms: the stanby television has a red LED, when I turn it on it flashes 6 times and turns blue, but it has no sound, no image, no backlight, I have measured the voltages of the source and there are 5v, but not 12v and 24v, I have changed the source to a used and tested according to the seller, because I had a short one, but it still does not turn on, I would like to know how to bypass this source to test it Without the mainboard, attached source scheme, the p201 connector is that of the main board output.

LG_EAX55176301.pdf [136.04kb]

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Victor E

65.783

hace 5 años

from 5 volts to the power-on pin with a 1k resistor, and the source must start and deliver the other voltages

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maheji

265

hace 5 años

I've already done it, it doesn't start, could it be the eprom?

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Victor E

65.783

hace 5 años

That is to test the source alone, not to start the TV, is the answer to your question how to test the source without the mainboard. "I would like to know how to bridge this source to test it without the mainboard, attached schematic of the source, the p201 connector is that of the output to the main board."

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maheji

265

hace 5 años

If sorry, it has nothing to do, but I already made the bridge with a 10k resistor and it does nothing.

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maheji

265

hace 5 años

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hace 5 años

Do you have to have the ccfl lamps connected to measure the voltages of the source with a bridge?

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Victor E

65.783

hace 5 años

No, it is understood that to test the source this may be disconnected from the circuit of the TV, the test is to know if it delivers all the voltages nothing more. If they do not turn on the lamps or the TV does not start that is another issue.

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maheji

265

hace 5 años

Thanks Victor, it is already solved, it was a bad contact with the power on pin, it is already repaired and working.

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maheji

265

hace 5 años

Sorry, I wanted to value you, it was a mistake of mine, which I still do not clarify with this format, who read this post knows that you are the one who really came up with the solution.

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