Lenovo 120S no backlight. Schematic needed

[claudyu07]

hi guys.
Lenovo 120s no backlight after someone tried to change lcd without disconnecting battery.
I have checked for fuse around lcd connector but can't find any.

Motherboard 120s_mb_v1.0 svt.

Thanks

[claudyu07]

Re: Lenovo 120S no backlight. Schematic needed

Anyone pls? Is fairly urgent.
Thanks

[MJ-meo-dmt]

Re: Lenovo 120S no backlight. Schematic needed

Hi.

Are you getting all the voltages for the LVDS out. 3.3V, B+...
Did you check with a new LED/LCD? or check the/for fuse on the LED/LCD driver board(the one on the screen)...
Check the cable sometimes they burn a wire or 10... :P

If its a eDP setup like on the Dell's check the LED Driver chip / and or power circuit for it... (had a bad time with a xps)

[zurvanielle]

Re: Lenovo 120S no backlight. Schematic needed

i also need the schematic diagram of this motherboard 120S_MB_V1.0 SVT.. plz share...^_~

[crowntoy99]

Re: Lenovo 120S no backlight. Schematic needed

hi guys.
Lenovo 120s no backlight after someone tried to change lcd without disconnecting battery.
I have checked for fuse around lcd connector but can't find any.

Motherboard 120s_mb_v1.0 svt.

Thanks

hai bro
you have a bios file

[Duranitron]

Re: Lenovo 120S no backlight. Schematic needed

just a suggestion try another good lcd screen. try to increase brightness in keyboard shortcut usually f keys.

[ca3cooh]

Re: Lenovo 120S no backlight. Schematic needed

here it is bios and everything
https://www.badcaps.net/forum/showthread.php?t=83026