Question about HP Compaq Business Notebook NX9005 Notebook

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Backlight no longer working...

Looks like I need a new LCD inverter. How easy is it to get hold of one and how easy is it to install a new one?

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Try this place:http://www.lcdparts.net/Default.aspx, it is dead easy to fit the lights and invertor but it aint cheap

Posted on May 24, 2008

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Posted on Jan 02, 2017

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Samsung TV No Backlight Issue


Hi Cool,
Please disconnect the bulbs number one and solder a 4200pf/2kv capacitor in its place. See if the set works. Do the same for all the bulbs till you find the defective one. With the defective bulb replaced with 4200pf capacitor set will not power off. If this works and the light on the screen is sufficient, you can leave the capacitor soldered there. I hope it helps.
Good luck.

Nov 01, 2016 | Samsung Televison & Video

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Benq fp222w monitor switches on but black screen no backlight what parts need replacing to fix pls


If there's no backlighting but you can see the image anyway, then your monitor might have a defective inverter. The inverter is responsible for providing power to the backlight, so if it is defective, the light won't work and it might need to be replaced.
An LCD inverter looks something like this:

denisgomes.jpg

You can easily find inverters for sale online, but be careful: you have to find the exact same inverter for your monitor, or it may not work.

Mar 02, 2011 | BenQ FP222W LCD Monitor

1 Answer

Toughbook is on but screen is black


Ok that means your lcd inverter has went bad or the backlight ,,but usally the lcd inverter,,can find both on ebay,,cheap uaslly,, but the inverter probly your problem ,,definetly would start there,,easiest fix,,find you a lcd inverter,,,,ebay or internet,,when u get it,,take bezel off lcd ,,the front cover with screw driver,,be easy ,,take ur time ,,once off ,,in the middle of lcd @ bottom theres lcd inverter ..exchange for new one ,,turn on and check b4 u put bezel back ,,on,,should be good to go,,if that doesnt fix,,backlight bad,,easy to find also,,goodluck,,

Nov 20, 2010 | Panasonic Toughbook 28 Notebook

1 Answer

Trying ti fix a gate way fpd 1520 flat panal monitor i can see the image lightly but looks as if maby a bulb may be out any sugguestions on how to fix


LCD monitors use a fluorescent backlight system. A 15" probably needs just one. These are sandwiched on the perimeter of the monitor (usually under some tape that holds the lamp, reflector and other parts together. You need to order by length and width and get ones for your monitor size. Separate the panel from the bezel. Remove the tape, and separate the reflector (make a note of how things are put together) then you have to Dremel (or use another rotary tool) to remove the plastic to get the backlight out. (They are often molded into the frame.) Some backlights are sold without the wires. In that case, desolder the wires from the old backlight and solder them to the new one. Then put in the new backlight and reassemble everything. (http://www.lcdparts.net/howto/default.aspx) but for an overview: http://www.inventgeek.com/Projects/BacklightFix/overview.aspx Then push the new backlights into place, reconnect the wires and close up the sandwich of tape and other parts around the screen. Then replace it in the bezel.

Sometimes the inverter will fail but since you see the image that is likely not the case. However, you should consider testing the backlight with the inverter before installing it. (Unplug the old backlight (similar to a molex connector) (or desolder the wires from the old backlight and resolder them to the new one, depending on your backlight replacement), connect to the inverter and plug in. If it lights, you are good to go. Inverters can be tested with a high end multimeter (that can read frequency) or an oscilloscope. They cause an induced current which changes sign around the unit. Depending on the age of the inverter this can be 60 Hz or 50kHz. Hold the multimeter probes a fraction of an inch apart about an inch above the inverter. If a multimeter reads zero or near zero, the inverter is bad or the multimeter can't resolve the frequency. If you see a value or 1., then the inverter is good.)

I hope this helps.

Cindy Wells

Oct 07, 2010 | Gateway FPD1530 15" Flat Panel LCD Monitor

2 Answers

It looks like the bulb in the screen is burnt out. The screen is completely dark when fully chared.


You can determine if the bulb is bad by simply connect a monitor to the fifteen pin AGP port located at the side of your computer usually color blue. If your computer display the desktop on the monitor,you should change the bulb in your computer display.To change the backlight you need to follow these steps :Power off your Toshiba laptop and make sure the AC adapter is unplugged.
Remove the screws on the side of your laptop screen. Once the screws are removed, you can remove the plastic bezel (screen guard).
Pop the bezel out, exposing all of the LCD screen. Pull the LCD screen gently away from the computer by the corner. Be mindful that the screen is still connected to the computer by a ribbon cable.
Remove the tape over the ribbon cable where it connects to the screen, and gently pull the cable to disconnect it.
Turn the LCD face down, and remove the piece of tape that holds the top metallic foil against the back of the LCD.
Lift the metallic foil to expose the backlight. Remove the single screw at the end of it that holds it in place. Unclip the wire at the end of the backlight from the inverter (power source to the backlight), and remove it from the LCD. Replace it with the new backlight (available at any electronics store or online), and reassemble the device the same way you took it apart.

Aug 30, 2010 | Toshiba Satellite A105 Notebook

1 Answer

How difficult is it to replace backlight inverter on a LCD TV?


Replacing LCD inverter board is very easy.Does not involved in any soldering.It a long board in shape.Just take ur tv aparts,use a Philip screw driver take out 6 Philip screws each board and connections.Do the reverse to install the LCD inverter boards.Tries Websites like Shopjimmy.com,Ebay.com to buy refurbish LCD inverter boards.

May 01, 2010 | Vizio GV42L 42 in. LCD Television

2 Answers

I have a Dell laptop D505. The laptop powers up but the screen display is very dim. I can't see the image on the monitor. I've tried to manually increase the color/brightness button and nothing changes. ...


Sounds like your inverter or your backlight is failing. The inverter is an easy repair, the backlight can be replaced but it involves taking the LCD panel apart, The backlight comes installed on new screens. I can include a service manual below and possibly a generic guide to backlight replacement....

http://support.dell.com/support/edocs/systems/latd505/sm/display.htm#1052500

http://www.laptoprepair101.com/laptop/2007/01/31/replace-screen-inverter-fix-backlight/

Sep 23, 2009 | Dell Latitude D505 Notebook

3 Answers

Dell Inspiron 6000 Laptop Screen has Faint Image


It's a faulty backlight (screen).
Replace screen (same dell part number) with inverter, otherwise screen can be dark.
Here is how Dell part number looks (green):
c104971.jpg

Aug 19, 2009 | Dell Inspiron 6000 Notebook

1 Answer

I was told that the backlight on my monitor was burned out. Can this be replaced without having to send it off somewhere? Where can the replacement light be purchased


First off it could be the backlight bulb or the LCD inverter. I would try the LCD inverter first it will cost about $25 and is easy to get to Take the face plate off around the monitor and the LCD inverter is at the bottom. It looks like a strip of circut board with plastic coating over it. Most of the time it is the LCD inverter.

But if its the Backlight bulb you might be able to take it to a local tv repair shop. you can order the backlight bulbs online but they are gragile and tricky to replace. you have to seperate the layers of glass on the screen abd the backlight will be at the top inbetween the layers of glass. If you do decide to do make sure to wear rubber gloves because the oiles from your fingers will get inbetween the glass layers and cause foggy spots when you put it back together.

Hope this helps

What kind of computer is it?

May 02, 2009 | Gateway FPD2275W LCD Monitor

1 Answer

Monitor screen is very dim.


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

Apr 22, 2009 | HP Compaq Presario R4000 Notebook

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