Question about Twinhead DURABOOK D14RY

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I have a GemmaTech Durabook D15R Series. I was

I have a Durabook D15R Series. I was using the computer and all of a sudden the screen went dim. It was very very dim but it got lighter somewhat after I shut down the computer for about 6 hours. Still though the screen is dim. I can make whats on the screen and when exposing to light it can be used. However, I am not sure why this happened , would it be backlight problem or inverter? how can I tell the difference?

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  • wailosama Apr 16, 2009


    Thanks for the reply. None of the symptoms you describe fit my computer. The screen is dim (wouldn't say very dim because I can make out whats on the screen and even use it but with much concentration) but no red or any other colors noticed , it doesn't flicker , nor it comes back to normal at any point. So my believe is like you said the backlight / inverter. It works perfectly on an external display without any problems and have not noticed any unusual noise coming from the computer or screen.

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You could have a defective screen, either a faulty inverter or a CCFL lamp - follow this to determine the fault.

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.
  • 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 it up, 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.
Check out for parts, repair service and DIY info.

Posted on Apr 16, 2009

  • Chris Hingee
    Chris Hingee Apr 17, 2009

    Since your external monitor displays normal images then the video card/chip is OK.

    Can you increase the brightness of the LCD screen using the Fn key plus one of the Function number keys (the key would have a sun like symbol with and UP arrow and another with a down arrow)?

    By the description of the image on your LCD screen - dim and no colors, it is possible that the video driver is corrupted. Try re-installing the video driver.


    The video cable connector which connects the LCD to the motherboard needs reseating to make proper electrical connection.



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