please help, friend, asu ROG G750JW REV. 2.1 lvds problem

[fredyjbi]

asus board series g750jw rev 2.1
the laptop turns on, the caplock lights up and works normally but the LCD doesn't display an image
I have 2 units of this laptop, one of which has no display, so I've tried changing the flexible cable and LED and also the GPU card

J4501
pin list
1 AC_BAT_INV 19v
2 AC_BAT_INV 19v
3 AC_BAT_INV 19v
39 +LCD_POWER 0v
40 +LCD_POWER 0v
24 BL_EN 0v
38 LCD_PWM 0v

L4501 pin 1, 2 0v

Q4502 pin list
1,2,5,6 +LCD_POWR_S 3,3v
4 +LCDPOWER 0v
3 L_VDDEN_RR 0v

Q4501
1,4 gnd 0v
5,6 L_VDDEN_P 3.3v
3 L_VDDEN_RR 0v
2 L_VDDEN 0v

Q4503
gate L_VDDEN_P 3.3v
drain +LCD_POWER_R 3.3v
source gnd 0v

R4509 1 and 2 0v

D4502
1 LID_SW# 3.3v
2 LCD_BACKOFF# 3.3v
3 BL_EN_C 0v

D4501
1 LCD_BACKEN 0v
2 BUF_PLT_RST# 3.3v
3 BL_EN_C 0v

all resistance is not short to ground
thank you for your help friends

[ktmmotocross]

Re: please help, friend, asu ROG G750JW REV. 2.1 lvds problem

as u dont have PWM, BL_ON and +LCD_POWER

it is not in error but it is not enabled. bad gpu, bad onboard ram, ....

did u flash virgin bios?

[fredyjbi]

Re: please help, friend, asu ROG G750JW REV. 2.1 lvds problem

as u dont have PWM, BL_ON and +LCD_POWER

it is not in error but it is not enabled. bad gpu, bad onboard ram, ....

did u flash virgin bios?

thank you sir for your explanation, I have flashed the bios and also replaced the vga card but it is still the same, I have 2 units one using 3d and one using a 2d vga card I tried to exchange it but the result is still the same