Question about Toshiba Satellite A105-S4004 Notebook

2 Answers

Screen is Black even when the machine is on

I just found the LCD screen of laptop keep black (Satellite A105))when I turn on the machine. I restarted my computer several times, but the screen is always black. I can hear the sound when the windows starts, but the screen is almost back (I can see a tiny little bit of my desktop, but it's impossible to use it at all). Any suggestion about how to fix it? Is this a problem of the screen, the motherboard, adapter.. or what else?
BTW, I don't have an external screen to try:(
I need it to work,,,,,please help me!!!!
Thank you very much!

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  • JennyNi Oct 13, 2008

    Thanks a lot, Ian!


    I'm planning to bring my laptop to some laptop repair company, but I'm traveling in Sydney now,  ......still search where I can get people to check it...

  • JennyNi Oct 13, 2008

    Thank  you very much! Where can I find somewhere to replace the display for my laptop?

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This has got to be the LCD and not the motherboard as you say you can seen a little bit of your desktop. This indicate that the back light in your lcd is not working and that is not something you can fix by themself. You may have to find a cheap replacement display, depending on repair cost.

Posted on Oct 13, 2008

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Good day,

since you can still hear that your laptop is starting, the system is still fine, hence, we can isolate the problem to several causes that would make your screen turn black, it might be due to a loose connection between the video card and your screen, the cable connection to your screen, or your screen might be busted already.

if you are the techie type of gal, you can dismantle your laptop yourself and isolate the problem. be sure that the warranty is already expired since you will automatically void the warranty if you open your laptop yourself. however, i suggest that you contact a competent technician to check the problem as it might also include other problems that might have caused the black screen (software driver for your video card perhaps).

i hope this will help

Posted on Oct 13, 2008

  • Ian-Kent Famador Oct 13, 2008

    no problem.



    how long are you gonna stay in sydney? replacing the screen of your laptop or isolating the problem would take some time, i suggest that you consider your travel schedule.



    you can contact toshiba australia through the following contact information:

    12-24 Talavera Rd
    North Ryde, NSW 2113, Australia

    +61 2 9900 1200
    +61 2 9887 3322
    +61 2 9887 4866 - Fax
    +61 1800 806 153
    http://www.toshiba.com.au/&dq=toshib..." target="_blank" rel="nofollow" >toshiba.com.au

    i hope this will help

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Toshiba a105 on start up screen is red, then goes black


The Toshiba A105 notebook computer is made for mobile computer users who need optimal processing power. The LCD screen is a 15.4 diagonal widescreen with TruBright technology. The laptop has a fast hard drive access rate that is in the 3ms range for the paging and access of data. There are problems that can occur with the Satellite A105 that can be solved by knowing what to look for when troubleshooting the system.

Black Screen Problem Black screen problems can occur when the Satellite A105 backlight is burned out or the inverter is not working correctly. The backlight can be replaced with a new LCD bulb manufactured for LCD screens. The inverter is a housing unit that controls the voltage to the LCD screen. The inverter must be replaced by a compatible A105 Satellite inverter unit. Power Problems b> During the power-up phase of the laptop, the Satellite A105 will quickly turn off without signing into the Windows Operating Screen. The problem can be due to a faulty power adapter that is not supplying the right amount of voltage to the system board. You can also check to see if the unit that houses the power plug is loose, which also indicates lack of voltage or electricity going to the board for power up operations. Hardware Conflict Problems b> Hardware conflicts can cause system errors or "freezes" by loading a new hardware component into the same hardware I/O address. The Satellite A105 has designated input/output addresses for peripheral devices, such as hard drives, video drivers and other hardware functions. To solve hardware conflicts, use the Control Panel "Hardware" device function to see which hardware I/O addresses is not being used. b> Audio Not Working Correctly b> Loading a new audio program can cause the audio codec for the Satellite A105 not to produce sound. The audio codec can be restored by loading the "restore system disk" for the A105 laptop. The restore menu provides options on certain components that you want to restore. If you pick the option for audio, the program will restore the audio to its factory settings. b> On-board LAN Switch Not Working b> The Satellite A105 is automatically configured to detect T Base 10/100 Ethernet networks. If the laptop does not recognize the on-board LAN switch, check the system setup to examine if the LAN switch is on. If so, a firmware update may be needed to upgrade the BIOS.

Jan 16, 2013 | Toshiba Satellite A105-S4334 Notebook

1 Answer

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-S4074 laptop's monitor has no backlight


Use the VGA port to connect an external monitor, this will get you up and running temporarily until you can fix the screen, it sounds like you have a faulty inverter.

Apr 06, 2010 | Toshiba Satellite A105-S4074 Notebook

1 Answer

Toshiba Satellite a105 s4004


Here, I found this:
Toshiba Satellite A105. How to remove and replace laptop FL inverter and LCD screen.

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

Jun 23, 2009 | Toshiba Satellite A105 Notebook

2 Answers

Toshiba Satellite A105 Display


If you've replaced the LCD Panel already, then chances are good, the failing part may be the FLR inverter. It's a thin little chip about 3 or 4 inches in length that bridges the connection between the LCD and the motherboard. It's location varies from computer to computer though, so you may have to check with manufacturer documentation. They're not too terribly expensive to replace though, much cheaper than the LCD panel, anyways.

May 09, 2009 | Toshiba Satellite A105-S4004 Notebook

1 Answer

Dropped Toshiba satellite a105 laptop, screen black


If you pull off the top part where the speakers are above the key board your monitor might be unplugged. i had the same problem with one

Mar 09, 2009 | Toshiba Satellite A105-S4004 Notebook

1 Answer

Black Screen


Hi, ok friend must identify 2 things, the first thing is if the screen in black appears since it power on the equipment and changes are not obvious at the back of this one, of being like that this means that it can have faults to level of the card of video or of the LCD, now well, if it looks for a light source and at the back of the LCD to show the dark screens, it indicates that the FL Inverter this one damaged and must replace.

Jan 12, 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

If I open my Satellite A105 display too far, it goes black.


Hi, This is definitely a loose connection problem.
Does the screen go completely black or just a part ?
If its just a part, LCD is defective. You may have to change the whole LCD screen. You can get one for ~180$ from ebay
If the whole is turning off, I guess the power cable might be little loose.
You can open the LCD panel and check if you know what you are doing.
Else take it to a normal technician and ask him to open the LCD panel and see it.
:)

Nov 17, 2008 | Toshiba Satellite A135-S2276 Notebook

2 Answers

Toshiba satellite A105-S361


the inverter maybe going bad. go to ebay get a cheap toshiba satellite a105 lcd inverter.bam the problem fix oh you would need a screw drivercause this is a diy project no need tosend it out link me if anything bakerandre2000@yahoo.com

Apr 14, 2008 | Toshiba Satellite A105-S4004 Notebook

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