Question about Toshiba Satellite A105-S4004 Notebook

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White out screen

I have a toshiba A105 laptop, we just fired it back up after coming back form a business trip. the screen is so bight you can barely read the icons and desktop. It was fine just a few days ago. thanks

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  • Anonymous Dec 08, 2008

    same problem but I was on computer at time am now waiting for toshiba to send box Hope it doesnt cost me alot

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Hit the FN and sun symbol
if that doesn't control the brightness then your inverter
is about to blow the lamps.

Posted on Mar 26, 2008

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Display divided into 3 parts


LCD screen cracked, and Three even strips going across? Doubtful. Haven't seen it but I always have my mind open.

Three strips that are irregularly shaped? Look like glass that has cracked?
'Jagged edges'?

LCD screen is broken.

Three even strips indicates to me, that there may be a problem with the Video Cable. Then the screen Inverter is next in the diagnoses.
My money is on the Video Cable.

ALL power removed, Anti-Static Precautions FOLLOWED, I would check out the graphics chipset first.

1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port on the laptop.
Left rear side. This is an example of a VGA Cable, and VGA connector. (VGA port on a laptop ),

http://en.wikipedia.org/wiki/VGA_connector

(Color of connector does Not matter. It is generally Blue, though)

You can use a CRT type of monitor, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

2) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.

There are at least 3 display options available;
1) Laptop internal monitor ONLY
2) Laptop internal monitor AND external VGA monitor
3) External VGA monitor ONLY

Press, and hold down on the Fn key, and at the same time tap once on the F5 key. (The F5 key is the Display Toggle-Over key)

No display on external VGA monitor?
Hold the Fn key down again, and tap once more on the F5 key.

Is the display on the external VGA monitor, the same as the internal monitor of the laptop?

Problem is the graphics chipset.

Display is fine on the external VGA monitor?
Problem is the Video Cable, screen Inverter, or LCD screen.

Video Cable:

A) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/big/Toshiba-Satellite-A105-14.jpg

Switch Cover removed, Keyboard removed. Shows you where the Video Cable plugs into the motherboard.

B) http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/big/Toshiba-Satellite-A105-21.jpg

Palm Rest Cover you can see the white rectangular connector, for the motherboard side of the Video Cable, at the top left.
It's above the black cable, and near the screw hole.

The Video Cable leads from the motherboard, up through the left Hinge, and into the Display Assembly.
From there it connects to the screen Inverter, and back of the LCD screen.

http://www.ebay.com/itm/Toshiba-Satellite-A105-6017B0050801-LCD-Video-Cable-Genuine-OEM-Laptop-TESTED-/290754851160?forcev4exp=true&forceRpt=true

In the photo, (You can hover your mouse cursor on it to enlarge), the right side connector plugs into the back of the LCD screen.

The black connector to the far left connects to the motherboard.
The small white connector at the top with the Red, Green, Black, etc wires, connects to the screen Inverter.

(The small Black cable, that comes out from the black motherboard connector, is a Ground wire )

Due to the close proximity of the Video Cable to the left Hinge, it can be pulled on from just normal opening, and closing of the laptop over time.

This means the Video Cable connection on the motherboard side could be loose, or the LCD screen side, or both.

The diagnoses is to PHYSICALLY check BOTH connections. A loose connection at the motherboard, or at the back of the LCD screen could be so small in distance, that you will not see it with the human eye.

Could also result in damage to the Video Cable.
View the Video Cable with the Switch Cover removed, and see if there are any obvious signs of damage to the sheath of the cable.

If there is there could be damage to the tiny wires inside the Video Cable. (Stretched/Broken)

Use a multimeter set to OHMs, to check all wires inside the Video Cable for continuity, or have a 'Mom and Pop' computer store check it for a few bucks, or replace the Video Cable.

Video cable connections are tight? Video cable continuity check checks out OK?
Screen Inverter.

The test for a screen Inverter is to use a sensitive multimeter.
Read fairly expensive.

http://www.fonerbooks.com/test.htm

Not having access to a sensitive multimeter that you can use, means just replacing the screen Inverter. Seems like 'part changing', and it is, but you have to work with what you've got.

http://www.sparepartswarehouse.com/Toshiba,Satellite,A105,Laptop,Inverters.aspx

Find THE model number for your laptop, and the correct screen Inverter. A screen Inverter, and an LCD screen are a MATCHED unit.

Screen Inverter is checked out to be OK, or replaced, and symptoms are still the same, the problem is the LCD screen.

Remember, the first part of the diagnoses was to see if the divided parts were EVEN going across, or jagged and irregularly shaped.

Jagged in shape, and not even strips going across, means cracks in the LCD screen.
Replace.

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-replace-LCD-screen-1.htm

[ Main article for A and B links above;

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-motherboard-1.htm ]

For additional questions please post in a Comment

Regards,
joecoolvette

Oct 22, 2012 | Toshiba Sattelite A105-S2051 Notebook

1 Answer

Toshiba A105 S2719 screen problem


Is this behavior irrespective of power condition of the laptop, ie both ac and battery?
Please see bios bulletins for your system here. Sometimes a bios update can correct this kind of problem...
However, also note this article.
In the probable event that none of that works, it's probably your inverter or backlight (EL) panel, both of which can be replaced. The white lines are not a good sign. See other thread discussions of same here and here.
Google "diagnose laptop monitor failure" for more, or see this repair guide.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

Aug 19, 2009 | Toshiba Satellite A105-S2719 PC Notebook

1 Answer

I have a Toshiba Satellite A135 and not sure if blacklight or something else


Your backlight lamp, (Bulb), or the Inverter is bad.

1.General instructions, and photos, for replacement of a typical laptop backlight,
http://www.ccfldirect.com/lcdtutorial.html

2.Instructions for completely disassembling a Toshiba Satellite A135 laptop. The reason I included this is twofold.

A.It shows, and tells exactly, how to remove the LCD screen from your laptop.

B.It shows you that the following information in link 3, on how to replace an Inverter in a Satellite A105, will work for your Satellite A135.
http://www.irisvista.com/tech/laptops/toshiba-satellite-a135/remove-mainboard-1.htm
(At the bottom of this page you will see Page1:: Page2:: Page 3:: Page 4
You are on Page 1. Just click on the white Page2, and so on, to continue)

3.How to replace an Inverter in a Satellite A105,
http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-replace-LCD-screen-1.htm

FIRST! Always remove all power! AC adapter, (Charger), and battery.

Second! Observe anti-static guidelines!

Third! This ain't tough! It just looks hard. Once you see how simple this is, I'm sure you'll agree with me.

May 28, 2009 | Toshiba Satellite A135-S2276 Notebook

1 Answer

LCD dark with white vertical line down it


It is the C-Board Panel Attached to the Display Panel And Is Integrated into the Screen .. You will need a screen replacement..
Your part is.... Toshiba Satellite A105 15.4" LCD Screen LTN154X3-L06

Feb 13, 2009 | Toshiba Satellite A105 Notebook

1 Answer

Toshiba satellite a105 screen problem


You need a new lcd, The connectors are bad...

Dec 13, 2008 | Toshiba Satellite A105 Notebook

1 Answer

Toshiba Satellite


I had two Toshiba laptops, one changed the mother board twice, went back to the shop 5 times. it is hard to find out why, that why Toshiba got suit a couple years ago.

Jul 10, 2008 | Toshiba Satellite A105 Notebook

1 Answer

Cracked Screen


The backing of the screen will stay. You'll only be receiving the lcd.
http://www.fonerbooks.com/laptop_4.htm

Mar 08, 2008 | Toshiba Satellite A105-S4004 Notebook

2 Answers

Toshiba Satellite A105 Screen Problem


Only thing i can say is this. Try to get a new screen because from what you are describing. I believe that the monitor is damaged inside. If you got the laptop recently i will suggest that you get it returned for a different one.

Mar 08, 2008 | Toshiba Satellite A105-S4004 Notebook

1 Answer

Toshiba a105 screen goes blank


Sounds like GPU failure. unfortunately its nigh on impossible to replace without replacing the whole board which can be expensive. I saw a few on ebay for around £120.

Aug 14, 2007 | Toshiba Satellite A105-S4004 Notebook

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