Lenovo G40-70 backlight no image

[maurovalero]

Hello, my laptop turns on and it has backlight but it shows nothing
board aclu 1/2 uma nma272
i did replace the memory ram, change the socket, probe new ram.

[Jesse James]

Re: Lenovo G40-70 backlight no image

Check connector to screen is secure

[ktmmotocross]

Re: Lenovo G40-70 backlight no image

image on external display?

[JaroTech]

Re: Lenovo G40-70 backlight no image

Hi, if you have a white screen, then what voltage do you have on pin 21 of the screen connector (JEDP1) on the motherboard, you should have 3.3 VDC?

[ktmmotocross]

Re: Lenovo G40-70 backlight no image

Hi, if you have a white screen, then what voltage do you have on pin 21 of the screen connector (JEDP1) on the motherboard, you should have 3.3 VDC?

he didnt wrote white display

[taroo]

Re: Lenovo G40-70 backlight no image

he didnt wrote white display

I have same problem

pin 21 3.3V OK please advice

[taroo]

Re: Lenovo G40-70 backlight no image

he didnt wrote white display

White Screen Appear