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The Lenovo IdeaPad Yoga 11S is a 2015 2-in-1 convertible laptop with an 11.6” multi-touch display.

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Backlight not working, inverter not found

The screen displays but there is no backlight. I tried swapping out the LCD panel but it still doesn't backlight. It boots up and everything loads but the screen is black. I can see the image with a flashlight.

People say it's the inverter but I can't find that anywhere, and it's not on the Lenovo teardown/blowup that shows 200 parts inside https://download.lenovo.com/consumer/mob...

I can't find the inverter available for sale anywhere even ebay and Lenovo.

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Solución Elegida

The newer laptops do not use inverters anymore as they all use LEDs now that are built into the panel. The LCD connector on the logic board is what drives backlight power to the LEDs in the screen. Most likely you have a blown backlight IC or filter on the logic board and only be able to repair with schematic experience and board level

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@Daniel The logic board on a Lenovo/PC would be the “system board” or motherboard, correct? So replacing that should fix the problem? Thank you very much.

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Yes correct.

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