Question about HP Compaq Presario R4000 Notebook

1 Answer

Monitor screen is very dim.

Always. How do I brighten the screen?

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  • Chris Hingee
    Chris Hingee May 11, 2010

    Does the laptop work and how dark is the LCD screen, can you see any image on the screen.

  • Maurice B Thomas
    Maurice B Thomas May 11, 2010

    Are you the original owner of this laptop?

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  • Expert
  • 52 Answers

Hi,
you must replace your lcd inverter, you can obtain one for around 5-15 usd, you will need to open your lcd bezel(plastics)this it a common problem in this model, its easy just be carefull with your lcd. The inverter it is located under lcd, you need to remove the frontal plastic, locate the inverter and replace it. The dark it is because your inverter no longer turn on your backlight(a lamp to give brightness to your lcd inside your lcd)
This could be a hard work if you didnt have the tools or experience.

If you wish we can replace your inverter for $49 usd
10001 buckwood ave 79925 El Paso Tx.
Contac us if you are interested
Thanks, please leave feedback
Vcrtech
support@vcrtech
vcrtech@hotmail.com
www.vcrtech.com

Posted on Apr 28, 2009

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Sounds like your inverter is failing. The inverter takes the dc power from the battery and charger and converts to high voltage AC current for the backlight lamp inside the screen. When the inverter starts to fail, the display will sometimes blink, dim out over time, flash just get dark and stay that way.

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If you cannot vary the brightness of the LCD screen the you have a faulty backlight.

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I too have the same problem with the same monitor.. tv looks great OSD looks great.. pc is dim.. This has nothing to do with the inverter board or the backlight.. I believe that there is an issue with the components that render the Computer video.

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