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My screen is durk - Toshiba Satellite 4300 Notebook

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Have a problem with LCD like, if you do not continue to deteriorate, it is using CRT / LCD monitor with external

Posted on Jul 20, 2009

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Gray screen


The liquid has damaged the screen driver chips on the rear of the screen. Replace the screen.

Jan 29, 2014 | Toshiba Qosmio PC Laptops

1 Answer

Screen has horizontal lines and fading


bad screen u have to get new screen take it apart from top side pop off top panel 2 screw on back use flat head unscrew screen get new one one ebay ect ok cheak cables in ther also thx nick

Feb 09, 2008 | PC Laptops

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 PC Laptops

1 Answer

Pink screen


Problem can be;

1) Graphics chipset
2) Video Cable
3) screen Inverter (IF Used)
4) LCD screen

Diagnose to find out.
I need the laptop manufacturer name, and model number.
Model number can be found on the Bottom of the laptop.

Post back in a Comment.

A) Graphics chipset:

An external monitor is used to check, and see if the display is also pinkish on it; or it is OK. Info posted I need, I will detail this procedure out step by step.

Display good on external monitor means graphics chipset is OK.
(Mounting is usually the problem)
Means problem is screen Inverter (IF used), or Video Cable, or LCD screen.

B) Video Cable:

The Video Cable connects to the motherboard, in an area under the Keyboard, or under the Switch Cover.
(Depending on laptop design, Switch Cover may be an integral part of Palm Rest Cover)

From there it leads under, or close by the left Hinge; and then goes up into the Display Assembly.

IF, a screen Inverter is used, the Video Cable has a separate small cable that branches off; and connects to one side of the screen Inverter.
The main part of the Video Cable connects to the back of the LCD screen.

Just due to normal repeated opening, and closing of the laptop; the Video Cable may become pulled on, and/or pinched.
This can lead to a loose connection at the motherboard side, or LCD screen side. (and/or screen Inverter, IF screen Inverter is used)

Can also lead to a damaged Video Cable. (Stretched/Broken wires inside it)
This can cause a pinkish screen.

C) screen Inverter:

With Backlighting that uses CCFL/s for a Backlight, a screen Inverter is used.
(Cold Cathode Fluorescent Lamp)

For Backlighting that is LED, a screen Inverter MAY, or MAY NOT be used.
(First design LED backlighting seemed to. Later design LED backlighting, does not. Light Emitting Diode)

A screen Inverter is used to convert the power (Electricity), from the laptop; for the LCD screen and Backlight.
Screen Inverter going out, can cause a pinkish screen.

D) LCD screen:
Graphics chipset is good, Video Cable connections are good; no damaged Video Cable, screen Inverter is good (IF used); problem is LCD screen.

Awaiting manufacturer name, and model number.

Regards,
joecoolvette

Apr 30, 2013 | PC Laptops

1 Answer

Windex between screens


If the cloud like image is black then you have damaged your screen by applying too much pressure on the screen.
You should use special LCD screen spray and soft cloth to clean your screen to gently clean the surface of the screen.
Replacement :CD screen maybe available for your laptop from this WEB site.
LCD screens and Inverterswww.lcdparts.net

Apr 14, 2012 | Compaq Presario CQ62-219WM Notebook

1 Answer

Compaq presario 2200 white vertical screen line


its ur lcd screen problem mainly comes when ur screen get some external shock to screen mainly its not repairable need to replace the screen other way is a risky one by resolding the screen main board which is behind the lcd screen (dont try urself ) nd its not a big problem as ur screen work properly

Jun 29, 2010 | Compaq Presario 1200 Notebook

1 Answer

Replace laptop screen


STEP 1.:-Turn off the laptop and remove the battery.There are no screws securing the screen bezel. Start separating the screen bezel from the display cover with your fingers.
STEP 2.:-Continue removing the screen bezel on the top.
STEP 3.:Remove bezel from the hinges.
STEP 4.The screen bezel has been removed.
STEP 5.:Remove six screws securing the LCD screen assembly.
STEP 6.:-Separate LCD screen assembly from the display cover.
STEP 7.:-Place the LCD screen assembly face down on the keyboard. Now you can access the back side of the screen and disconnect cables.
STEP 8.:-Disconnect the video cable connector from the LCD screen controller board.
STEP 9.:-Parts of the video cable could be glued to the screen. Unglue the cable.
STEP 10.:-Disconnect cable from the inverter board.
STEP 11.Remove the LCD screen assembly.If you are replacing the LCD screen you’ll have to transfer mounting brackets from the old screen to a new one.


This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya


Dec 23, 2009 | Fujitsu Siemens AMILO Pro V2010 Notebook

1 Answer

Screen problems


This will be either a loose screen connection or a failing screen. Start by checking the screen connections. It's generally the connection on the back of the screen, but go ahead and check the screen to inverter, and screen to motherboard connections also. If the connections are good, and you still have the problem, then I'm afraid screen replacement is going to be your only option.

Aug 22, 2008 | Dell Inspiron 1501 Notebook

2 Answers

Broken Screen


Unfortunately, there is not a way for you to just replace the screen only.


Thank You!!!!!!!!!!!!!!

Jun 26, 2008 | Acer Aspire 3623WXMi Notebook

1 Answer

Dell c640


By default Windows XP displays the Graphic login screen with icons and usernames at startup.

If you would like to use the more traditional Windows NT login screen you can get to that screen by pressing Ctrl Alt Del (Reboot key sequence) twice.

If you would like to change to the traditional screen at login, instead of the graphic login screen, do the following:
  1. Log in with administrator access.
  2. Click on Start, Control Panel, and select user accounts.
  3. Click on Change the Way Users Log On or Off.
  4. Click on the Box "Use the Welcome Screen" so that there is not check mark.
If you would like to switch from the traditional login screen to the more graphic screen just click on the box in step 4 above so the "Use the Welcome Screen" box is checked

Cheers-Parveen

Feb 08, 2008 | Dell Latitude C640 Notebook

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