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"dead" laptop display

post #1 of 5
Thread Starter 
Hello

I have a friend who has a laptop that once the display went dark when he started the laptop.
It then worked fine.

Now couple of weeks later it is permanently dark.

Ive read that if you put a flash light to the screen and get a image then it is a "switch" that is broken and not the display itself.
I don't have access to the laptop right now but according the owner it gives a slight image when putting flashligt on it.

Now I wonder what I should get, a replacement display or a replacement switch?
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post #2 of 5
It's the power inverter for the backlight that is most likely dead, they die a lot more often then the actual backlight does and are a lot easier to replace. I would definitely replace the inverter, that should fix it, but if it doesn't then you know it's the backlight that went out.
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by Mauser View Post

It's the power inverter for the backlight that is most likely dead, they die a lot more often then the actual backlight does and are a lot easier to replace. I would definitely replace the inverter, that should fix it, but if it doesn't then you know it's the backlight that went out.

Ok, she took it earlier to a service place and they said it needs new display but my understanding is they only look from the outside.
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post #4 of 5
if you can still see the image, the display is working fine, all that is bad is either the backlight or the inverter, more likely the inverter
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Core 2 Quad Q9300 Gigabyte EP45-UD3P Radeon HD 4870 512mb xfire 4x Corsair XMS 1GB 800mhz 
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by Mauser View Post

if you can still see the image, the display is working fine, all that is bad is either the backlight or the inverter, more likely the inverter

My understanding was there was something to see but it was wery difficult to see when pointing a flashligt on screen.
Gaming Rig
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CPUMotherboardGraphicsRAM
I7 5820k Stock clocks Gigabyte X99 UD4 2x EVGA GTX 1080 FE SLI  Corsair 64GB (4x16GB) DDR4 2133MHz CL13 Vengean... 
Hard DriveCoolingOSMonitor
Intel 530 M.2 SSD 180GB OS + Samsung 850 EVO st... Mugen 4 push pull Win 7 64bit home prem Acer 27" XG270HU 144hz TN + LG Oled 4k TV 
PowerCaseMouseMouse Pad
EVGA T2 1600W Fractal XL R2 CM Xornet Steelseries Qck+ 45cm black 
Audio
Sennheiser RS185 wireless headphones 
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Reply
Gaming Rig
(15 items)
 
  
CPUMotherboardGraphicsRAM
I7 5820k Stock clocks Gigabyte X99 UD4 2x EVGA GTX 1080 FE SLI  Corsair 64GB (4x16GB) DDR4 2133MHz CL13 Vengean... 
Hard DriveCoolingOSMonitor
Intel 530 M.2 SSD 180GB OS + Samsung 850 EVO st... Mugen 4 push pull Win 7 64bit home prem Acer 27" XG270HU 144hz TN + LG Oled 4k TV 
PowerCaseMouseMouse Pad
EVGA T2 1600W Fractal XL R2 CM Xornet Steelseries Qck+ 45cm black 
Audio
Sennheiser RS185 wireless headphones 
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