Question about Dell Inspiron 1150 Latitude D600 14.1 LCD Display-LP141X14 CD-ROM Drive

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Lcd inverter--need to replace - Dell Inspiron 1150 Latitude D600 14.1 LCD Display-LP141X14 CD-ROM Drive

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Dell inspiron 1150 , works great on external monitor, lcd screen is white and that is all i can see...

Posted on Oct 10, 2009

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They aren't hard to replace. If you can find one on eBay, get it and use the on-line manuals from Dell's web site. They are very clear and easy to follow.

Posted on Dec 31, 2008

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Toshiba Regza 42RV535U42" LCD HDTV when i turn it


Check the power going to the inverter board (24V) if ok...replace Inverter board....

Oct 28, 2013 | Toshiba Regza 42RV535U 42 in. LCD HDTV

1 Answer

Why is my replaced lcd screen not lighting up?


1) Wrong LCD screen

2) Video Cable (LCD Cable) is not connected tightly.
Motherboard side, or LCD screen side; or both.

3) IF, a screen Inverter is used, the small cable from the Video Cable, that connects to the screen Inverter; is not connected, or has a loose connection to it. (screen Inverter)

4) An LCD screen, and a screen Inverter are a Matched unit.
If it's the wrong LCD screen......................?

5) IF, a screen Inverter is used; the diagnosis was wrong, and the LCD screen was replaced.
90 PERCENT of the time, the fault is a bad screen Inverter.

A) Laptop's LCD screen uses a CCFL, (Or more than one), for a Backlight; the laptop uses a screen Inverter.

Diagnostic flowchart leads from Graphics Chipset, to Video Cable, to screen Inverter, THEN, LCD screen.
Expensive LCD screen was replaced, instead of the actual part that needed replacing;
Video Cable: $9 to $22
Screen Inverter: $9 to $22

LCD screen: $60 to $245

B) Laptop's LCD screen uses LED backlighting, and does NOT use a screen Inverter:

Diagnostic flowchart is;
A) Video Cable;
A Video Cable should have it's connections PHYSICALLY checked.
You have to try to push the connectors in tighter.
Visual inspection alone will NOT do.

Making sure the Video Cable connections are tight, and this does not fix the problem, then the Video Cable needs to be removed; and every wire in the Video Cable checked for Continuity with a multimeter set to OHM's. (1K)

Not feasible, then take the Video Cable down to the nearest small computer shop; and have the resident tech check it for Continuity.
Should only be a few bucks.

Or just replace the Video Cable.
(Parts changing I know, but...........?)

Primer:
An LCD screen cannot produce light. It needs an additional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, (Or more than one), or a series of LED's.
(Light Emitting Diode)

A CCFL is a Cold Cathode Fluorescent Lamp. (Bulb)
Similar to Fluorescent lighting used in homes, and businesses; but on a MUCH smaller scale.

Average thickness is 2mm. That is a little large than 1/16th of an Inch.
Average thickness is almost as long, as the LCD screen is in height.
View the last 8 photos,

http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

A screen Inverter is used to convert the power, (Electricity), from the laptop; for the LCD screen, and Backlight.

As previously stated, Backlighting that uses CCFL, uses a screen Inverter.
LED backlighting MAY, or MAY NOT use a screen Inverter.
When the LED backlight technology first came out, it seems some did use a screen Inverter.
It also seems as the technology advanced, LED backlighting does Not use a screen Inverter.

Regards,
joecoolvette

May 14, 2013 | Sony Computers & Internet

1 Answer

Laptop screen is very dim. There is a very faint image. The LCD screen is brand new so that's not the problem


Hello,

As per your description, it is probably your inverter which is faulty.

The inverter is an electrical device which 'lits' the LCD. Without the inverter and the bulbs it powers, the screen would be too faint to be seen correctly.

To test if the inverter is defective, just turn on your laptop in a dark space, then put a flashlight on the screen to see if you have a fainted display. If you can see something, it is the inverter which is defective and should be replaced.

If you are handy, you can also remove the screen cover to see if there is a neon like light which lits up behind the LCD. If you can see the light, it means that the inverter is just working fine and that the is with the LCD itself, but if there is no light coming from behind the LCD, then you need to replace the inverter.

jbertrand_ba.jpg
Picture of an inverter.

Replacing the inverter:

1. After removing the screen 'cover', locate a small circuit board (usually below the LCD). Unplug the electrical cables and replace.

Hope this posts helps you.

May 16, 2011 | Computers & Internet

1 Answer

My hp laptop turns on bt the screen will not come on how can i fix it


Hello,

As per your description, there are two possible causes. Either the LCD is out of order and needs to be replaced, or that the inverter is defective.

The inverter is a electrical device which 'lits' the LCD. Without the inverter and the bulbs it powers, the screen would be too faint to be seen.

To test if the inverter is defective, just turn on your laptop in a dark space, then put a flashlight on the screen to see if you have a fainted display. If you can see something, it is the inverter which is defective and should be replaced.

If you are handy, you can also remove the screen cover to see if there is a neon like light which lits up behind the LCD. If you can see the light, it means that the inverter is just working fine and that the is with the LCD itself.

jbertrand_ba.jpg
Picture of an inverter.

Replacing the inverter:

1. After removing the screen 'cover', locate a small circuit board (usually below the LCD). Unplug the electrical cables and replace.

In case the inverter is working correctly, try to check the LCD cables. If all cables are well connected, your LCD has to be replaced.

Hope this posts helps you.

May 09, 2011 | HP Computers & Internet

1 Answer

Hp g5000 sreen does not light up as usal, i can see a the start up when i shine a torch at the sreen, what do i need to do to get working.


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

The LCD screen is a composite of layers, surrounded by a thin metal frame that resembles a picture frame.
To one side of the LCD screen layers, and under the frame is usually where the Backlight is mounted.
[Note* Two Backlights are used in some models]

Replacing a Backlight is more labor intensive than replacing an Inverter.
Due to this, and the cost, the LCD screen itself is replaced as a unit most of the time, when it comes to Backlight replacement.

Example of a replacement LCD screen for the HP G5000 series of Notebook PC's,

https://www.screentekinc.com/HP_G5000_Series--15.4-inch--1280x800-wxga-laptop-lcd-screen.shtml

[Note* Stating HP G5000 is just stating the model series. When buying replacement parts the EXACT Model Number should be used. This information is located on the bottom of the laptop, in a white Service Tag.

When replacing an LCD screen, the model number of the replacement LCD screen should be matched to the existing LCD screen's Model Number.
Inverters and LCD screens are matched together. Make sure you get the correct part]

An Inverter is used to provide power from the laptop to the LCD screen, and to the Backlight.

Note* 90 Percent of the time the problem is a bad Inverter.

Example of an Inverter for an HP G5000 series notebook PC,

http://www.zlectronic.com/product/INVERTER-FOR-HP-DAC-07B035-DAC-09B017-DV5000-G5000.html

The LCD screen, Top Cover, Display Bezel, Inverter, Backlight, and various screws, make up the Display Assembly.
The Display Bezel made of plastic surrounding the LCD screen, and in front of the LCD screen is removable.
Behind it is easy access to the Inverter.

The Inverter is approximately 4 inches long, and the width of a No.1 pencil.
Usually located at the bottom of the LCD screen, and right behind the Bezel.

This article shows replacing an Inverter and LCD screen on a Compaq Presario v2000 series Notebook PC,

http://www.insidemylaptop.com/replace-lcd-screen-inverter-compaq-presario-v2000-laptop/

This pictorial guide is not for the HP G5000 series Notebook PC, but the models are very similar when it comes to Inverter replacement.
The above link is to show you what is involved.

Please post questions in a Comment.
Regards,
joecoolvette

Apr 03, 2011 | Computers & Internet

1 Answer

Blank screen when turned on.sound is fine though.when i use external monitor it works on the external monitor.


Hi. I have 2 units of T23, 1 unit T22 and T30. All of them has the same problem as yours. 3 units has bad inverter and the other 1 has bad CFL. Inverters can be replaced but if you have bad CFL, it is better to replace LCD screen. If your problem is CFL, you will be able to see a very faint image on your LCD screen. If the LCD is completely black and you can't see anything, then it is an inverter problem.

Inverter is located below the LCD screen. You need to remove the LCD face plate to access the inverter. Please click here for the step-by-step instruction how to access the inverter or replace the LCD screen. Inverter and LCD are available at ebay.

Note: T23 has thin plastic parts that can be easily broken when disassembling.

Good Luck. Let me know further.



Jun 28, 2010 | IBM ThinkPad T23 2647 Notebook

1 Answer

Dell d410 lcd display is dim


may need an inverter or replacement lcd if the bulb in the lcd is damaged. The Good neews is that 98% otf the time a display ges dim tth inverter is the cause and its abit easy to replace.
heres the inverter
http://cgi.ebay.com/Dell-Latitude-D410-Inverter-Board-12-1-LCD-IV11176T-LF-/370391713650?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item563d110772

Jun 19, 2010 | Dell Latitude D410 Notebook

1 Answer

Cracked lcd screen. Found a lcd replacement without the inverter. What does an inverter do? do I really need it? Can't i just take the one on the previous lcd screen and apply it to the new lcd? and just...


The inverter is the source of all the "brightness" of the LCD display. So, unless you use your laptop in a totally-dark room, you need an inverter.

I would try your current inverter, to see if it works, before going out and trying to find/purchase an inverter.

May 13, 2010 | Toshiba Mini NB205-N313/P Netbook

2 Answers

My Inspiron 1200 turns on but I have a black screen - no video. It began fading - now nothing. Is there anything I can replace?


Hi:
One thing to try is to connect your Inspiron up to an external monitor. You can plug in any kind of monitor, but you might have to toggle to the external mode:
Hold down your function key, then hit the LCD/CRT key. If you have a good display on an external monitor, then you are going to need either a LCD inverter or new LCD. They are not too hard to swap out, the inverter costs about $15,it is mounted in the lid, below the LCD, and the replacement LCD about $80.

Dec 01, 2009 | Dell Inspiron 1200 Notebook

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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