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Lenovo Y50-70(no touch) power on but no display

Troubleshooting Laptops & Notebooks - Badcaps Forums - www.badcaps.net
hi my laptop display is dead (no image, no backlight, nothing)

when press the power button the keyboard backlight, power light, battery light is on, no hard drive light and the fan spins for a few seconds. also i got a little heat in the heatsink (i guess the source of the heat around PU1102,PU1103,PU1104)

i have tried replacing the ram, harddisk, external display, wiggle lcd cable, reset the power, etc but still no luck..

is there any other sugestion ?

here i attached the board schematic

thanks !
Date: Jul 16, 2017   


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