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My laptop monitor flickers ramdomly....the grafix

My laptop HP nx9000 monitor flickers ramdomly....the grafix card is fine. as it works well on extrnal monitors.
yesterday it was all black looked like backlight is dead. this morning it worked again..........what could be the problem? is it the loose connection.
how do i check this.

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  • kumar_rohiet Jul 14, 2009

    thanks for your reply Geekman. But there is no red/pink flash. the screen display is excellent except for the fact that some horizontal line appers for few sec and gets normal again. this happens at randomly and i cannot control this.
    As mentioned the external moniter works great.
    Yeaterday the laptop screen went blank/black with very few light making windows hardly visible. making me think that the CCFL lamp is faulty and demands replacement. But this morning i was surprised when my machine worked fine again,with good quality of light and flickers making me think that a loose connection is causing a problem.
    how do i check the loose connection to rule-out this possiblity if it is not the real issue.
    Appreciate your reply.

  • kumar_rohiet Jul 14, 2009

    correcting myself....
    But this morning i was surprised when my machine worked fine again,with good quality of light and NO flickers making me think that a loose connection is causing a problem.

  • kumar_rohiet Jul 14, 2009

    correcting myself....
    But this morning i was surprised when my machine worked fine again,with good quality of light and NO flickers making me think that a loose connection is causing a problem.

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This could be a faulty CCFL lamp.
To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions.
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.
Check out
www.lcdparts.net
for parts, repair service and DIY info.

Posted on Jul 14, 2009

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