hi every one

i have this g42 display on CRT (external monitor) is ok but on self led no display

1-i change the LVDS cable with this number =ax1lc001
2-change led with new one
3-i checked the Backlight voltage on LVDS connector was 19 volt
4-i check all fuse near the port was ok
5-i heat on GPU and resold it


i don't know ????
before me some body work on this laptop but not can successful

Your laptop has two video? Intel and amd? if it does, check in windows, try to swith monitors, and graphics.
Check signal lines from chip to lvds connector, if it is ok, try to replace the gpu.

hi
in windows no result

my laptop have one video

where i must check for signal ??