hi

The LED of the notebook was broken and we replaced the LED, but the LED light does not increase or decrease. Please guide me how to program the LED.
Of course, I have prepared the 40-pin flat cable and LED program direction conversion.

PartNumber LED Org : LP156WHU-TL-A1
PartNumber LED Changed : LP156WH3-TL-F1

bios LED LP156WHU-TL-A1:


thanks.

Hi
I think it's enough to just replace the LEDs and everything should work.
I think no need to program the LED.
May be you need OS drivers for driving LED light?
What is it means "LED program direction conversion"?

Download and Install drivers NECESSARILY from official Lenovo site. For win10 use win8.1 driver.
P.s. you can adjust brightness in BIOS.

hi

In the BIOS, the LED light does not increase or decrease.

I mean by "LED program direction conversion" :

thanks

Is adjustment works on original screen? I dont think reprogram can fix a trouble.

Yes, it works in the original

Hi
Check signal "BL PWM" (pin 35) at matrix LVDS connector by oscilloscope. PWM modulation must be changing then you chahging brightness.