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Current version by: jayeff ,

Text:

Hi,
 
Are both the fans working, you didn't say?
 
Did you try toggling the graphics between integrated and discrete by pressing Fn + F7 just to check?
 
Also try operating Fn + F10 to increase the screen brightness.
 
Just trying to eliminate remote possibilities.
 
You say that the display emits some sort of light so try shining a torch at an angle close to the laptop screen and check for images when the laptop is on and there is a display on the external monitor. Try this in a darkened room asbecause if there are any imagesimages, they will be very faint.
You say that the display emits some sort of light so try shining a torch at an angle close to the laptop screen and check for images when the laptop is on and there is a display on the external monitor. Try this in a darkened room asbecause if there are any imagesimages, they will be very faint.
 
''If there are images'' is then there is a backlight problem. You would need to know the pinout for the video cable to know which pins the backlight feed is on. Mostly in laptops the backlight power is permanently supplied to the LCD panel and it is turned on and off in the panel by a signal from the motherboard on the BL_On wire in the video cable.
 
''If there are no images'' then as you say there most probably is a connection problem but it could be at either end, motherboard or LCD panel or perhaps the cable is damaged where it passes through the hinge to get to the panel from the motherboard

Status:

open

Original post by: jayeff ,

Text:

Hi,

Are both the fans working, you didn't say?

Did you try toggling the graphics between integrated and discrete by pressing Fn + F7 just to check?

Also try operating Fn + F10 to increase the screen brightness.

Just trying to eliminate remote possibilities.

You say that the display emits some sort of light so try shining a torch at an angle close to the laptop screen and check for images when the laptop is on and there is a display on the external monitor. Try this in a darkened room as if there are any images they will be very faint.

''If there are images'' is then there is a backlight problem. You would need to know the pinout for the video cable to know which pins the backlight feed is on. Mostly in laptops the backlight power is permanently supplied to the LCD panel and it is turned on and off in the panel by a signal from the motherboard on the BL_On wire in the video cable.

''If there are no images'' then as you say there most probably is a connection problem but it could be at either end, motherboard or LCD panel or perhaps the cable is damaged where it passes through the hinge to get to the panel from the motherboard

Status:

open