Question about E-Machines M6811 Notebook

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Dim sreeen on hp ze5620us

How can I brighten my screen on the HP ze5629us? I have change the inverter and the screen is still dim. The Picture quality is poor and I have a problem with the screen flickering or blinking. Can you help?

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On 6811's over time the contact wires inside of the base of the laptop become loose from their screws from opening and shutting of the laptop. Poor design open the case if you are familiar with computers and take a terminal cleaner and rough up the ends of the contacts then secure them tightly again making sure you gave them enough slack to close the laptop without strain on these wires.

Posted on Sep 08, 2008


Follow this procedure to troubleshoot an incorrect display on a monitor using the Microsoft® Windows® XP operating system.

IMPORTANT: The procedure below requires a user account with administrator rights.

NOTE: Some monitors must be turned on after the computer is turned on.
Degauss the monitor by turning the monitor off, waiting a few seconds, and then turning the monitor back on.

This may need to be done several times before a degauss is successful.
Some monitors may require up to 20 minutes between degaussings for an optimal effect.
Reset the monitor to factory defaults.
Configure the monitor in VGA Mode.

NOTE: Follow this procedure to reset a Sony® monitor.
Verify the correct monitor resolution is selected in Display Properties.

NOTE: If the monitor is a CRT (Cathode Ray Tube), it may be necessary to adjust the monitor refresh rate to eliminate flicker.
Ensure the color depth is at least High Color 16bit.
Remove any large electrical devices or speakers from the vicinity of the computer.

NOTE: This includes devices plugged into the same power strip as the monitor.
If using a CRT (Cathode Ray Tube) monitor, turn off any fluorescent lighting.
Disconnect and reconnect the monitor to the computer, ensuring there are no bent pins or broken connectors.

If using an available BNC connection for the monitor, ensure the 5 BNC connectors are in the proper order, red, green, blue, horizontal synchronization, and vertical synchronization.
For monitors which support both a BNC and a HD15 connection, ensure the monitor is configured to use the current connection type.
For monitors using both an analog and a digital connection, use only one connection type to the computer.
Wiggle the video cable where it connects to the monitor to ensure the cable does not have a short. If this causes the problem to go away and then come back, the monitor may need to be serviced.

NOTE: If a video pass-through card is used, bypass the video pass-through connection and connect from the monitor directly to the video card. If the problem is resolved the video pass-through connection may need to be replaced. Contact the manufacturer of the video pass-through hardware.
Remove any video extension cables.
Perform a monitor self-test to ensure the monitor is functioning correctly.

NOTE: Follow this procedure to perform a self-test on a Sony® monitor.
Try the monitor in a different room. If successful, suspect an EMI (Electromagnetic Interference) or AC voltage problems in the original room. A line conditioner can be purchased from a local retailer to help resolve voltage problems.

NOTE: A line conditioner is not guaranteed to resolve this issue.
Try the monitor on a different computer.
Perform a system restore to a time when the computer was functioning properly.
Restore the video drivers.

Posted on Apr 12, 2008

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The backlight is probably failing if it is still flickering - does the screen start out pink/red when you turn it on?

The best way to tell is to plug in a known good LCD and verify it lights up properly.

Posted on Dec 21, 2007

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Posted on Jan 02, 2017

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Is it problem accours in another monitor that pluged to your notebook? If no, the possibility is inverter failure. Try to replace the inverter to your service centre

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The problem could be the backlight or its inverter is bad. IF picture remains but lights only go out. Also it is normal for the screen to go black if the laptop is not used.

If the picture itself remains on the display but it just goes dim, try turning up the brightness, if noting happens, most likely the backlight of the screen or its inverter is or has gone bad.

Would need to be confirmed in person.

If the picture does not remain on the screen and the laptop shuts off, your charger might not be working, and your battery is low.

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How do I turn up the brightness on a HP Probook 6550b?

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Every laptop is different, so adjusting the brightness or contrast on your laptop may vary from the steps provided on this page. However, understanding the process of how to adjust the brightness or contrast will help you change your settings.
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The screen's back light seems to be off but i can

Either the lcd inverter or the lcd itself is bad. If the machine is under warranty then call HP to get it serviced otherwise

254108-001 is the part number for the lcd

Couldn't find the part number for the inverter board but I found one on Ebay here:

Jan 23, 2010 | Compaq Presario 700 470024-192 Notebook

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Monitor screen is very dim.

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

Apr 22, 2009 | HP Compaq Presario R4000 Notebook

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Hp laptop 9720us screen wont brighten or dim. last week my screen went blank brought it to a shop they changed the inverter and also some cable connection . works fine just not quite as bright as before ....

You got the wrong inverter fitted - i'm sure your unit requires a sinle lamp inverter and they have cheated - putting in a generic lamp inverter and branching togeather the wires to accomodate the single plug thus reducing the available volatage for the lamps - this is why it's dim - correct part is 431391-001 Display panel power inverter - For use with single lamp display panel

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