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Laptop screen flickering

LCD screen flickering and going black

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  • Jack Feb 21, 2012

    I wondered if it could be the backlight because I can see my desktop icons and the mouse cursor very faintly on the screen. If I use a flashlight or a lamp I can see just enough to shut the computer down etc... I just hooked up an external display and it works fine so I don't know if it's the lcd cable or the inverter or the backlight. This started with faint horizontal lines across the bottom of my screen. Then it began to flicker. Then the flicker became worse and eventually went out or very dark. Sometimes the flicker would stop and the screen would be stable but the longer the computer was on the screen would go off so that led me to believe heat was possible a factor too.
    Thanks for the reply. I've heard that the lcd cable can get worn in the place where these hinges are on the dv6000 series hp pavilion laptops. Does any of this tell you any more or give you a better idea of what the problem could be? Any help is much appreciated.
    thanks.

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The video inverter may be failing, BUT...

More than likely the backlight is failing. If you can still see a VERY faint image on the screen this is almost certainly the problem.This is a very difficult fix. I recommend a replacement LCD.

It MIGHT be a bad lcd cable. With the laptop on, slowly open it from closed to open and back again and see if there is a position where the laptop screen does not flicker or turn off, [or if it does turn off if it turns back on.

If the screen goes COMPLETELY black then your GPU is failing.

Posted on Feb 21, 2012

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  • comitatus1 Feb 21, 2012

    In order of expense, here is what you have before you:

    1. Get a new inverter.

    If that doesn't help...

    2. Get a new backlight...but really this means get a new LCD because backlights are very difficult to replace.

    But I wouldn't bother doing either because it sounds like your GPU [Graphics Processing Unit] is failing, as evidenced by the slow degradation of the image on your external monitor.

    I would say it's time for a new laptop. If you really like the model you have, you could always look for an identical model on Ebay and find one that doesn't have a hard drive. When it comes, simply slip yours in and it will be good to go.

    Good luck!

    Chris

  • Jack Feb 22, 2012

    I didn't mean to suggest that the external display is not working fine. Using a different display, I have no issues at all. My guess was the inverter just from the little research I've done online. So with a new LCD would that include the inverter?
    And if it was the inverter would my external display be functioning fine?

  • comitatus1 Feb 22, 2012

    I misunderstood you, then. If everything is working fine on the external monitor then you either need an inverter or a new lcd. The lcd panel and the inverter are two different parts, so while I'm thinking it's the lcd backlight which is the problem, I've seen just enough bad inverters to advise you to get a good inverter first and try it. It is relatively inexpensive compared to a new lcd.

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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

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