Question about HP Pavilion zd7000 zx5000 zv5000 presario 3000,R3000 Series 120W Laptop AC Adapter-360699-001 CD-ROM Drive

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Backlight dim My laptop screen is very dim and hard to read when I turn on my laptop...

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Re: backlight dim

You probably just need to turn up the brightness.

Posted on Dec 13, 2007

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Brighten screen

Toughbook is a type of laptop computer marketed by Panasonic Corp.

The durable exterior makes it ideal for use in the military, government, hospitals and EMS systems.

The backlit keyboard is an accessory that can be added for convenience.

Check Power

Check the Toughbook to see if the power is on. Inspect the power cables to ensure they are intact.

View the available battery life on the screen of the Toughbook.

If the Toughbook is not receiving an adequate amount of power, the backlighting may not operate properly.

Optical Sensor

Remove anything that is obstructing the optical sensor.

The optical sensor is on the top right side of the keyboard.

The sensor reacts to light to determine if the backlighting should be turned on or off.

If there is anything obstructing the sensor, the backlighting will not work.

Wipe the sensor with a dry cloth to remove any dirt or dust that may be obstructing the sensor.

Connector Ports

Check the cables in the connection port to ensure the cables are securely inserted in each port. The connector ports that allow the keyboard to communicate with the LCD screen are on the left side of the keyboard and screen.

The keyboard cannot operate properly without solid connections, which are made with a USB and a function cable.

FN Button

Press the "FN" and "F12" buttons to brighten the back light.

The back light may be operating properly but you may be unable to see the light if it is too dim.

Pressing these buttons together will brighten the back light by at least four levels.


Place your hand on the bottom of the keyboard. If the keyboard feels hot to the touch, the keyboard probably has entered a protective sleep mode.

The Toughbook will go into protective sleep when internal temperatures reach a dangerous level.

When this happens, allow the computer to remain shut down for a while in order to cool down before it will begin functioning properly.

When the computer feels cool to the touch, it is safe to use.

This typically takes 15 to 20 minutes.

Hope this helps

Nov 14, 2012 | Panasonic Toughbook CF-W8 12.1-Inch Laptop

2 Answers

Hello.. I need some help. I am using toshiba satellite a1O system laptop was fyn till nw..all of a sudden windows doesnt load..when i turn the power on, the toshiba logo is shown..then black...

First thing you do is to see what hard disc installed in your laptop. You can check that by checking it in your bios system. To check in your bios system first turn off your computer then press delete while your laptop is booting up. Then you will see if there is a hard disk detected in your lap top if there is a detected hard drive this means you have a problem in your windows installed in your lap top.
There is also a reason why those message appear if the first boot of your laptop is the CD/DVD ROM. Check you CD/DVD ROM if there a CD inside this may the first on to read while the laptop booting up. Remove the cd inside your CD/DVD ROM. Then restart your laptop. Check your hard disk connector it may have some loose contact thats why your laptop did not recognize the hard disc.
Hope this can help keep on touch with fixya. Hope to hear some testimonial from you. . .

Aug 12, 2011 | Toshiba SATELLITE A10 A15 A20 A25 A35 A40...

1 Answer

My monitor doesnot run

Try an external monitor to verify if the laptop is working just fine.
If you get a clear picture on the external monitor, see if the laptop LCD is dim, or has no image at all.
If dim, you will need to replace the backlight or inverter.
If there is no image at all on the LCD, see if there's a small microswitch at the base of the LCD, this microswitch turns of the LCD assembly when the lid is closed. Usually these microswitches can easily get stuck due to dust and dew. You'll have to wigle it out with a toothpick or similar pointy object.
If there is no microswitch, perhaps it may be that the LCD cable is loose and is out of its socket, and you'll need to open up the laptop and re-seat a long (about an inch) rectangular-shaped connector leading from the motherboard into the LCD assembly.

Jan 02, 2011 | IBM LCD Panel, 14.1-in. XGA TP R50/p, R51,...

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The labtop fall and i get white screen, motherboard and prossesor are are working HDD is also fine..what are the possible problem that might occured with the screen??

You may have a defective CCFL backlight, it may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickers 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 replace the CCFL lamp.
To determine if the video card or the LCD is faulty, 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. It could be a faulty inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out; usually the CCFL lamp fails before the inverter.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site: -

Oct 28, 2009 | HP Pavilion DV4000 15.4" LCD LEFT AND...

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My hp laptop screen wont turn on.

You have a bad backlight or backlight inverter , that need to replace. Bring the laptop to expert technician.

Jul 24, 2009 | HP Pavilion zd7000 zx5000 zv5000 presario...

2 Answers

Dell Latitude C800

Does this happen with both the power plugged and running on battery?
Check the power modes, because the screen intensity is one of the power saving settings.


Aug 12, 2008 | Dell Latitude Cp, Cpi, Cpx, C600, C800,...

3 Answers

Lc display

how many hours do you have on that monitor could be lamps or just fusses

Nov 20, 2007 | Compaq Presario 900 /1500 Series EVO...

1 Answer

Compaq Presario 915US Backlight Out

First, are you sure it's the backlight and not the "inverter" or the motherboard not turning on the "brite" signal ?
Any way, to fix the backlight, you have to remove the screen from the laptop (in most cases) and then open the screens plastic case. Then, there should be a little circuit board at the bottom of the screen;that's the inverter.Disconnect both wires from it (there should be wires on each side of it).Now remove the screws holding the screen in the plastic case and lift out the screen.At the bottom edge of the screen,you'll find a piece of silver / metallic tape. remove this tape CAREFULLY . Also on the bottom edge there are tiny ( I MEAN TINY) screws at each end of the screen.Remove these carefully lift the metal cover along the bottom of the screen and the backlight is underneath this cover.

Nov 19, 2007 | Compaq Presario 900 /1500 Series EVO...

4 Answers

The screen goes blank at start up

If you can not see anything, then it may be your inverter (Replacement part cost is around $50.00), if you can see a dark image then your CCFL (Cold Cathode Fluorescent Lamp) is out. (Replacement part cost is around $15.00)

Check websites like

Oct 16, 2007 | HP Pavilion zd7000 zx5000 zv5000 presario...

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