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In my Toshiba laptop there is a problem with backlight. Could you fix it ?

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Yes it can be fixed with a new backlight if that's the problem. Start the computer and see if with a flash light you can see the windows xp starting up image or the desktop when it finishes starting. If so you need a backlight which looks like a small florescent light bulb. If not you could need a new LCD or video card or motherboard. You can test the LCD by hooking the pc up to an external monitor. If you can see the pc info then your video card is ok and your motherboard is ok. You need a new LCD.
Let me know if you need anymore help.
Henry

Posted on Nov 13, 2008

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MY TOSHIBA LAPTOP SCREEN WONT STAY ON IT IS ON FOR A SEC THEN I CAN HEAR A HISSING SOUND THEN IT GOES BLACK, IF I LOOK AT IT HARD OR TILT IT I CAN SEE THE IMAGE, HOW CAN I FIX THIS PROBLEM?


either your lcd inverter is going out,,or your backlight,,being that u here a hissing noise I would think that sounds to be your backlight is going out though,,,thats the lights that brightin the lcd from the inside,,,can be fixed not vry hard to do,,

Nov 08, 2010 | PC Desktops

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My screen on my laptop just went all black with a very faint image. what is wrong there, how do i fix it, and what made this happen?


A) What is wrong?;
Your Backlight has gone bad, or the Inverter.

B) How do I fix it?
Replace the Backlight bulb, or the Inverter

C) Backlight bulb's, and Inverters, like everything have a 'lifespan'
This one is at the end of it's. (Stating the Backlight or the Inverter

From here all I can give you is Generic information, since I do not have the laptop manufacturer name, and Model Number. This is on the bottom of the laptop.

1) An LCD screen cannot produce enough light by itself. A Backlight bulb, (Or more than one), is used to emit enough light.

2) A laptop cannot produce enough power to power the LCD screen, and is also used for power to the Backlight.

I'll have to discuss the way the Display Assembly is put together, and name parts in order to explain the following of how to repair. Again, generic information.

1a) The plastic top of the laptop is the Top Cover. There are different names used by different manufacturers.

1b) Looking at the LCD screen with the laptop open, there is a plastic frame that goes around the edges of the LCD screen, and is in Front.
This is the Display Bezel

1c) The LCD screen is behind the Display Bezel. The LCD screen is a composite of layers. The outside layer that faces you is a protective screen.
Around these layers composing the LCD screen, is a metal frame.
One side, (Or both sides) of the metal frame is removed to access the Backlight bulb.

1d) The Backlight bulb is a CCFL.
Cold Cathode Fluorescent Lamp.
Very similar to the fluorescent lamps, (Bulbs) uses in residential, and commercial applications, but on a MUCH smaller scale.

Now to show you generic laptop info on replacing the Backlight bulb for them.

A) http://www.insidemylaptop.com/category/backlight/

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

If I had the laptop manufacturer name, and Model Number, I could try to give you a link to the Service Manual for the laptop. (Free. Usually from the laptop manufacturer)
This way you would have Exact info on how to disassemble your laptop's Display Assembly.
Post in a Comment.

Oct 13, 2010 | PC Desktops

1 Answer

I have toshiba satelolite laptop. but when i tern on the screen is black and I see the board running


This page explains how to get to the inverter and backlight for a typical Toshiba:
http://www.fonerbooks.com/test.htm
This page tells how to test the inverter:
http://www.fonerbooks.com/test.htm
Good luck, hope this helps, and thanks for using FixYa.

Sep 05, 2010 | PC Desktops

1 Answer

Toshiba Equium A100-02k laptop black screen


sounds like it could be the monitor itself

Apr 02, 2010 | Toshiba Equium 100 PC Desktop

1 Answer

a


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering 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 replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, 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 and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info

Apr 21, 2009 | PC Desktops

1 Answer

Toshiba equium A100-306


try function key for lcd it may be in presetaiton mode by mistake
or is lcd on / come on bright then go dim / dark just very dim if so your backlight is out replace lcd

Oct 24, 2008 | Toshiba Equium 7100S PC Desktop

1 Answer

My toshiba SatellitePro series 4200 backlight doesnt work


From my experiences, it is either the back light or the back light inverter. Both are easily found on the net and are a pretty reasonable price to get your laptop back in working order. The inverter is rather simple to install, the actual back light you will need minimal soldering experience.

Try http://www.lcdparts.net/ for the parts.

Jun 11, 2008 | Toshiba PC Desktops

1 Answer

Low brightness to no brightness on the m55-s139 toshiba notebook ;what are the possibility fix?


The backlight has probably gone out in your screen. Replacing a LCD screen is fairly easy and can be done alot cheaper yourself rather than paying 3-400 bucks to hire someone to do it.

This ebay page contains the screen you need and instructions on removal and installation for your screen. It also contains the necessary information to make sure you are purchasing the correct screen.

http://cgi.ebay.com/TOSHIBA-SATELLITE-M55-S139-14-GLOSSY-LAPTOP-LCD-SCREEN_W0QQitemZ180238097667QQihZ008QQcategoryZ31569QQrdZ1QQssPageNameZWD1VQQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247

May 11, 2008 | PC Desktops

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