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Old 03-28-2022, 04:35 PM   #1
mferna14
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Join Date: Jun 2018
City & State: Brampton
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Default ASUS UltraBook UX403U no Backlight

Hi, working on ASUS UltraBook UX403U, it boots up fine but there is no Backlight. I can see the dim image in the background but no Backlight. I checked the Lid switch & is working fine. Replaced with known good LCD screens, still the same. I measured voltages, 19v is present on pin 1~3, but do not get the 3.3 volts. Does anyone have the schematics or the boardview so that I may know the pin-outs?? On board it has the 30-pin LVDS connector. Thanks of help
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