Thinkpad L440 Backlit Keyboard Upgrade Modding(UPDATE)

Lenovo Thinkpad Keyboard T440 T440p E440 E431 T431s L440 T440s Backlit Model

everithing work on L440 except backlit!, because the mobo not suppoort it!

i will try to making modification with 5volt and touch button

Its working directly, that touch button are neccesary!

Pinout

UPDATE 5/10/22

i use this touch sensor controller from Aliexpres

Pinout

Article Link

so you can put it if you are not interested in putting the sensor on it, which will say working without a switch.

I put hot silicone to hold the piece of copper ,

It is mandatory to replace the yellow cable and put enameled headphone cable, thus reducing its high sensitivity

In this part I reduced the length of the cable so that the coil on the upper right would not obstruct the keyboard input.

It was so messy, you can order it as you like, even use very fine cable for it.

Hardware Mods