Question about Gateway MX6956 Notebook
How come the computer screen stays black when I turn on my computer, which is a Gateway MX6956 Notebook PC.
You may have a defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Posted on Sep 10, 2009
Hook up an external monitor to it (old crt monitors are good for something after all) and try pressing the function key and holding it down while pressing each of the F1 through F12 keys (we are trying to switch the display to an external monitor) the one you are looking for has a (O) looking symbol above it.
if that does not work look for a stuck screen closed button switch. that detects when the screen is closed and shuts off the monitor see if its stuck down and try and free it if it is stuck.
you may also try to hold a bright flashlight up to the screen at an angle if you can just make out some details then the screens back light is out. and will need to be replaced.
Posted on Sep 10, 2009
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Posted on Jan 02, 2017
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