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LCD TVs - LED
Tv challenger audio only
hace 5 años
hace 5 años
Hello everyone in YOREPARO I have a challenger tv model LD 50L82 FHD T2 which does not turn on the audio backlight but without image I rehearse the led bars and turn on the voltage on the connector that goes for them has 8 positive 4 lines and four negatives provide the positive with plate ground and have 37.5 vol. I measured the input voltage to the t-con and it has 12 vol. The client tells me that TV has as a year and a half of use no more could the display be? the led bars when turning on the tv turn on but turn off there is same and remain off can you please guide me a thousand thanks
2.638
hace 5 años
Greetings Libardo, well look you must measure, between the points that say Led- and Led + not with plate ground, there must be enough voltage to light the LED bars, if not, you have problems at the source, luck .
hace 5 años
hello friend Fernando Bari I tell you already measured the voltages and marked 1 54.7 vol. the 2 45.4 vol. the 3 45.4 vol. the four 42 .8 with the reference to ground of the same connector and in order as it lights each bar which already tested and lit, I find neither the scheme nor the datasheet of the fet to test them, I don't know why the difference of the voltages I don't know what the correct measure should be, can you please guide me Thank you
hace 5 años
hace 5 años
Good morning, colleagues had the same problem of TV that only audio but no video I uncovered it to check it and disconnect the power of the led strip and I turn it on and it gave me a little traquidito and I already left the LED in blue and it does nothing more turn me on if anyone knows the solution thank you very much
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