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When the computer comes on it starts fading out then it goes blank


Laptop? The Inverter is going bad. (Screen Inverter)

An LCD screen cannot produce enough light by itself. It needs an additional light source.
A Backlight is the additional light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.

Similar to the Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.
(Average Backlight is approximately half the thickness of a No.2 pencil, and 3 to 4 inches long.
There are many variations, however)

An Inverter is used to convert the electricity provided by the laptop, for the LCD screen, and Backlight.

90 percent of the time the fault is a bad Inverter.

The Inverter is usually located behind the Display Bezel in the Display Assembly, and at the middle/bottom of the LCD screen.
It is a small circuit board.

Example of a typical Inverter,

http://www.laptopparts101.com/screen-inverter-board/

[The Display Assembly consists of all the parts that make up the display.

A) LCD screen

B) Display Bezel (Thin plastic frame in front of the LCD screen, and surrounds the LCD screen)

C) Top Cover (Top plastic piece of laptop)

D) Screen frame (Metal frame that resembles a picture frame. Surrounds the LCD screen.
{The LCD screen is composed of layers. This frame keeps them in an aligned state)

E) Hinges

F) Hinge Brackets

These are a few of the Display Assembly hardware components.

What is the laptop manufacturer's name, and Model Number?
(On the bottom of the laptop is the Model Number. Sometimes referred to as Product Number. P/N)
If I knew this information I may be able to provide a link to a free Service Manual

For additional questions please post in a Comment.
Regards,
joecoolvette

Jul 03, 2011 | PC Laptops

2 Answers

Dropped my AS7551G-6477 laptop and the screen is now broken, Is there a way to replace the 17.3 inch display?


Yes there is a way,

If you are capable you can remove the screen bezel and unhook the screen and grab the make and model information from the monitor.

With this information you can search online for another screen.


you can try:
lcds4less.com
www.laptopscreen.com

some of these sites do hold information that pertains to a specific laptop so you may find the information there without having to take the bezel off but why not since you have to anyway to replace it.

Jun 22, 2011 | Acer AS7551G-6477 17.3-Inch Laptop (Mesh...

2 Answers

My hp dv600 when powered up looks normal but if i give it a few seconds the screen goes black and wont come back i shined a light and i do have picture but no light maybe ballast?


alejandro,

An LCD screen cannot produce enough light by itself. It needs an additional light source.
A Backlight is the additional light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.
Very similar to the Fluorescent lamps, (Bulbs), used in homes and businesses, but on a MUCH smaller scale.

HP Pavilion dv6000z series Notebook PC, is a general series designation. The EXACT model number is on the bottom of the laptop in a white Service Tag.

The HP Pavilion dv6000z series of Notebook PC's used either an LED or CCFL type of Backlighting.
Depends on which model it is.

http://www.screentekinc.com/backlight-ccfl-led-explained.shtml

As stated in the above information a Backlight is mounted in the back, or on the side of the LCD screen.
The LCD screen is composed of layers. These layers are held together by a metal frame which emulates a picture frame. If the Backlight is a side unit it will be held in place next to the layers, and inside the metal frame.

[Which means the LCD screen's metal frame, (LCD Panel Frame), needs to be opened on one side.
This will leave the layers which compose the LCD screen loose. The layers MUST be held in the proper placing when changing out the Backlight. Not an easy job to accomplish]

An Inverter is used to change the power coming from the laptop, to be used by the LCD screen, and Backlight.
90 percent of the time the problem is the Inverter.

The Inverter for the Pavilion dv6000z series of Notebook PC's is located inside the Display Assembly.

The Display Assembly is the
1) Display Enclosure Cover, (Plastic top of laptop),
2) LCD screen,
3) LCD Panel Frame, (Metal frame around LCD screen),
4) Display Bezel, (Thin plastic frame which surrounds the LCD screen in the front)
5) Camera Module
6) Inverter
7) Display Enclosure Cover Hinges (2)
8) Display Enclosure Cover Hinge Covers (2)
9) Wireless Antenna Transceivers and Antenna Cables
10) Microphone receivers and cables
11) Various mounting screws

[The Top Cover for a Pavilion dv6000z series Notebook PC is essentially the Palm Rest. The cover under the Keyboard]

With the Display Bezel removed the Inverter is located at the bottom.
(Display Assembly removed from laptop first)

HP Support > Pavilion dv6000z Notebook PC series> Manuals>Service Manual>

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&lang=en&product=3224052&

One example of an Inverter for an HP Pavilion dv6000z series Notebook PC,

http://www.amazon.com/DV6000-DV9000-V6000-INVERTER-AS0231721C1/dp/B00480MXUS

Please post additional questions in a Comment.
Regards,
joecoolvette

Jun 11, 2011 | HP Pavilion dv6000z Notebook

2 Answers

My backlight on laptop monitor is very dim. i plugged into a external monitor and it works fine...how do i go about fixing this??


you should describe which brand of laptop which series it is.

For an acer laptop you can try pressing

FN + "->"

to increase the brightness

Mar 11, 2011 | PC Laptops

1 Answer

How do I replace LCD Screen on HP Probook 4510s?


hi

according to the S/N, this notebok has several options for the display with webcam
HP p/n 535851-001 or 535852-001, 535853-001, 535854-001, or 535856-001

you need to take the upper logic top cover , remoce the screws that hold down the keyboard. disconnect the webcam connections and the LCD invereter connectio. Remove the hinges that attach the LCD to the top cover, remove the bezel from around the LCD panel. There will be or mya not be some screws to remove to the LCD from assembly top cover.
this is basically it.

if you need more information, let me know -- i can get some other assembly isntructions for you if required. But let me know which LCD p/n it is you require.

Dec 09, 2010 | HP ProBook 4510s FM849UT Notebook

1 Answer

The backlight won't turn on but occasionally will flicker.


Suggest you replace the Inverter. A Backlight goes out all at once.
90% of the time the Inverter is the hardware part at fault.

[ An LCD screen cannot produce enough light by itself.
A Backlight is used to supply the needed extra lighting.
A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a much smaller scale

An Inverter is used to required power for the LCD screen, and the Backlight.
Boosts power up for the LCD screen, brings it down for the Backlight.

Dell Support > Latitude D600 Notebook PC > Service Manual

http://support.dell.com/support/edocs/systems/latd600/en/sm/index.htm

Replacing an Inverter is a simple job. Replacing a Backlight is not.
The Backlight is located within the LCD screen assembly.

The metal frame of the LCD screen assembly is removed along the edge where the Backlight is located, to access replacing the Backlight.

In the above list for Service Manual, click on > Display Assembly and Display Latch.

This information shows you where the Inverter is located on a Dell Latitude D620 Notebook PC.
The Latitude D620 is part of the Latitude D600 series of Notebook PC's.

http://www.insidemylaptop.com/remove-replace-lcd-screen-dell-latitude-d620-laptop/

Just one place from a quick search, that sells Inverters for a Latitude D600 series Notebook PC,

http://www.parts-people.com/index.php?action=item&id=2895

MATCH the part number listed that they have, to the part number on your Inverter.
You have to have THE correct Inverter.

Regards,
joecoolvette

Nov 05, 2010 | Dell Latitude D600 Notebook

2 Answers

Laptop lcd no-display problem


Need more information:

What Brand? Dell/Toshiba/Compaq
What Model Number?
Do the lights come on? BATT / Power / HD?
Does it work when conntected to a monitor?

Feb 04, 2008 | Toshiba Satellite A105-S4004 Notebook

1 Answer

1/2 Display


Hello Gliderrider!
Yep! Sounds like the LCD assembly. You can prove this by plugging in an external monitor. If that shows a good display, you've got a LCD problem.
If you are a bit adventuresome, you could always dig into it a bit and try to reseat the LCD cables at both ends. You'll have to get to the motherboard on one end and into the top cover to get to the one behind the LCD screen.
If you want to take a shot at tearing into this critter, follow this link for a service manual:
http://www.irisvista.com/tech/laptops/ToshibaP35/SatelliteP35_fix_overheating_1.htm

If you need any additional information, please feel free to ask. If this information has assisted you in the resolution of you problem, please return here to give my assistance an appropriate final rating. If this information has answered your question and/or lead to a resolution, please rate it as "Fixya!".
Thank you, and have a super day!
Ron-

Nov 30, 2007 | Toshiba Satellite P35-S611 Notebook

1 Answer

How do I replace the LCD screen hinge on my IBM T41?


I'm sure you could get these hinges from IBM, but no idea as to their cost. They are available on e-bay for $8-$35 (depending on whether you want 1 or a set) plus $8-$10 shipping.

As far as replacement. You will have to remove the Top cover assembly from the base of the PC. If you need help with that, just let me know and I'll talk you through that.

To replace the hinge, you will have to disassemble the Top cover assembly.The screws that you will need to remove are covered by small black adhesive covers. There are 3 round ones along the bottom of the bezel, 2 square ones up at the top of the bezel (to the left of the white LED keyboard light, and 6 (trapezoidal shaped) on the outside of the cover (3 on each side). Carefully remove those covers and the screws that are under the covers. Keep track of where the screws should go back in.

The actual bezel is held into the top cover with some internal snaps. Start at one of the corners, run a knife blade along the seam (between the cover and bezel) and you will hear each fastener "snap" as you slide the blade past it. Once the bezel is loose, lift it off of the LDC screen. There is one additional screw that is located up in the upper right hand corner. That one will need to be removed, also.

Gently lift the right hand side of the LCD assembly a couple of inches and place something of appropriate size to hold it in the raised position. You will see 2 additional screws that hold the hinge to the LCD assemble. Remove those and the old hinge will come right off.

Position the new hinge and replace the two screws that you had just removed. Reverse the removal sequence to reassemble the display.

Before you start snapping the bezel back into place, check to make sure that the two cover catches (those hook things, up at the top of the LCD assembly) are both operational. The link going to the left hand one tends to easily fall off.

This procedure should take in the neighborhood of 45 minutes to an hour.

If you need any additional information, please feel free to ask. If this information has assisted you in the resolution of you problem, please return here to give my assistance an appropriate final rating. If this information has answered your question and/or lead to a resolution, please rate it as "Fixya!".
Thanks you, and have a super day!
Ron-

Nov 15, 2007 | IBM ThinkPad T41 Notebook

2 Answers

Lcd display


b3nny,
Depending on the brand and model of you PC, a new backlight should fun from $5-$20. It normally shold not take more than an hour to replace it.
If you need any additional information, please feel free to ask. If this information has assisted you in the resolution of you problem, please return here to give my assistance an appropriate final rating. If this information has answered your question, please rate it as "Fixya".
Thanks you, and have a super day!
Ron-

Nov 14, 2007 | PC Laptops

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