Question about Toshiba Satellite A75-S211 Notebook

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Laptop is running but screen is very very dark. can just make out the welcome screen

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Try attaching an external monitor to the laptop & see if you could get any display on it. If this is successful, then you might have either a faulty LCD cable or screen inverter board.
The LCD cable transfers data signal from the motherboard & video card to the LCD screen. It also supplies high voltage DC power to the screen inverter board. The screen inverter board works as a power supply for the backlight lamp mounted inside the LCD screen. It converts low voltage DC power to high voltage AC power needed for the backlight lamp.

Posted on Sep 18, 2010

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SOURCE: screen too dark, don't know how to ajust it

go to control panel, personalize, display setting & change setting to 1280 by 800 pixels and chande color to the highest 32 bits

OR go to control panel, then click device manger, click display adapter make
Sure you have just one display driver install

Posted on Jul 11, 2009

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2 Answers

Why is there no display?


hi

can you plug in another monitor to the video plug on the side of your laptop?

if the monitor works but your laptop screen stays dark your laptop screen needs to be replaced .

If the monitor is also dark then the LCD screen is ok but the inverter needs to be replaced
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Sounds like the screen is burned out. You need to replace it.

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If it's plugged in and not running on batteries then it sounds like your screen is going out on you.

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My brightness control does not work just turned on and can not hardly see anything it is up and running what now


Have you tested it with an external monitor?

I would say you either have a damaged inverter board or screen baclight lamp. Usually the inverter board fails in one of the following ways:

1. When you turn on the laptop, the screen lights up for a short period of time and then goes dark. You still can see an image but it is very dark, almost invisible and definitely not usable. When you restart the laptop, the screen lights up and then goes dark again. The laptop works fine with an external monitor.
2. Your laptop turns on but the screen remains dark all the time. You still can see a very dim image outline. The laptop works fine with an external monitor.
3. The laptop screen works fine for hours or even days, but sometimes it goes very dark as it mentioned above. When you restart the laptop, the screen works fine again.

Inverter failure symptoms are very similar to backlight lamp failure symptoms and in most cases you cannot tell which one is causing the problem until you replace either the inverter board or the backlight lamp. From my personal experience, inverter boards fail more often than backlight lamps. If you have to guess, replace the inverter first.

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Screen is dark at start up


If its running on batteries the screen brightness will dim quite a bit. If on AC adapter it should be full brightness, but this is adjustable in either case. With the computer up and running, press and hold down the Fn key and push the up arrow to make it brighter and the down arrow to make it dimer.

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1 Answer

Screen too dark, don't know how to ajust it


go to control panel, personalize, display setting & change setting to 1280 by 800 pixels and chande color to the highest 32 bits

OR go to control panel, then click device manger, click display adapter make
Sure you have just one display driver install

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1 Answer

Screen is dark


Hi Yacob

First Run a diags on the dell laptop. You can initiate it by pressing fn+power button together and start the laptop. It will go to the diags screen. Tell me if the diags pass or not and then we will troubleshoot further.
Thank you
Rakesh
Dell Laptop Expert

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1 Answer

Dark Screen on IBM ThinkPad R-31


try to install a vga monitor in the (db 15) Blue video conector...see if your laptop works fine...

then shoud be the inverter of your LCD that is not working anymore..the backlight is dead...that´s why the dark screen is driving you crazy!

see the model of your laptop and try to buy it on ebay..there are a lots of inverters there!
Good Luck!

Dec 04, 2008 | IBM ThinkPad R31 2656 Notebook

1 Answer

Sony VAIO PCG-K25 Dark Screen


Do you get the same result if its plugged in or running off battery? Try holding down the "FN" key or function key and using one of the Function keys i believe its F6 on the sony's to brighten up your screen if that doesn't work try downloading and reinstalling your video driver and finally you may have a video card issue

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