Question about Toshiba (K000002020) Motherboard

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Toshiba A105 on off button (left top) loose. - Toshiba (K000002020) Motherboard

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I don't quite understand why I should get involved in this. If the product is within warranty, the owner will get re-imbursed. I am being asked if I have a solution for this problem, but the problem is not defined at all yet. When you have the problem defined, then I will gladly get involved but from what I see above, there is no problem at all. The only conclusion I can draw is that this is an advertisement of Toshiba, which I don't know where they buy their Mother Boards, of dubious quality, but I have had a dear friend in Argentina and he was quoted US $ 678.00 for a new MB. It just so happened that another friend of ours arrived in Buenos Aires and he had to repair the dc feed into the main point. I had a Compaq that their MB was so "good" that the wire inside the connector melted due to high heat and no one wanted to by pass it. This happened in Nicaragua and I fixed it the next time I vacacioned there. We have diffeent quality control for the USA and different for the other countries.... At least everything points to that!
CONSTANTIN SPYROU
(arzconst is my internal nickname with Fixya.com)

Posted on Jun 16, 2009

  • CONSTANTIN SPYROU Jun 16, 2009

    I don't know what happened, but I lost all of my notes and there is no way to get them back and work on them. I am terribly sorry....
    CONSTANTIN SPYROU

    Again I must say that there is no problem, how can I fix something when there is nothing wrong?


  • CONSTANTIN SPYROU Jun 17, 2009

    Dear Sir;

    A loose knob is not really considered a problem, since the equipment still works. However, since all knobs are nowadays plastic I think that replacement would be the only solution. In most cases the manufacturer will give knobs away or for a minimal amount. In the event that the knob has a set screw, then I will suggest to re-tighten the screw. Have in mind that things like knobs and other items of appearance are not always available exactly the way they were made.
    CONSTANTIN SPYROU


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How do I myself replace speakers in my Toshiba Satellite A105 ?


Search youtube, there are several walktroughs.

Generally the below screws have to be all removed and then the keyboard (small security buttons on the top of the keyboard) and carefully removing it watching not to damage the flex cable and pry the top cover to unclick. Then the insides should be easily exposed.

https://www.youtube.com/watch?v=ilyVTnHImzY

Aug 11, 2014 | Toshiba Satellite A105-S4284 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

2 Answers

How do i restore my toshiba a105 laptop to factory setting.


if you would like to reset to factory default turn off unplug power remove battery wait 30 seconds replace batt & power hold down zero button restart pc do not release zero button until you see screen flashes and you see cursor blinking at top left release follow instructions for restore to out of box state pc will restart several times do not touch until you see choose language page this is for windows 7

Apr 07, 2010 | Toshiba Satellite A105 Notebook

1 Answer

Media contoll buttons on a Toshiba Satellite A105 S4374


Usually these buttons only operate when the Toshiba software is fully installed. Check whether you do have the Toshiba Initial CD and try installing all there programms in terms of media .

Aug 17, 2009 | Toshiba Satellite A105 Notebook

1 Answer

Intermittant monitor clarity, resolution. On start up, Monitor resolution degrades and seems to be related to hinge position. Should it go in to service or Can ir be fixed easily with new driver. Satellite...


Hi,
This is a common problem with inverter cables working loose at the hinge end but could be a problem with the inverter itself or just loose hinges.
Downloading new drivers won't resolve the problem.
Either way the case has to be split to check certain components so opening it up will void what warranty you have left.
I recommend the you take advantage of the warranty and send it in for Toshiba to repair as when the laptop comes back it will be OEM repaired and should work great for a good while.



Regards.

Aug 17, 2009 | Toshiba Satellite A105-S4004 Notebook

1 Answer

Toshiba satellite A105 operating system not found, wife dropped laptop


usually a harddrive is designed to withold a drop (to some extent), so one of 2 things happen. either the head of the hard drive touched the drive (internally), and killed the hard drive, or the hard drive simply got loose where it connect. i would unscrew where the harddrive goes (easy don't panic about it, 1 or 2 scres tops) and take the hard drive out then put it back in. if the harddrive is ok, u should be back in business.

Jun 17, 2009 | Toshiba Satellite A105 Notebook

1 Answer

Right & left click buttons not working


hmm quite interesting
has your laptop suffered some damage
i recomend you try to disassemble your laptop and check the connector for the touchpad.
dont know how try this site:http://repair4laptop.org/disassembly_acer.html

Nov 30, 2008 | Toshiba Satellite A105 Notebook

1 Answer

Toshiba drivers for my lap top of satellite A105-S2011 model


hi, check this out to download driver of your wireless
http://eu.computers.toshiba-europe.com/cgi-bin/ToshibaCSG/download_drivers_bios.jsp?service=EU

Apr 11, 2008 | Toshiba Satellite A105 Notebook

1 Answer

How do you open up a Toshiba Satellite A105?


yep, with Dell you can do, just for that reason. As for Toshiba...I found it will open if you drop it at 8'.....but not at 6'. However, if you have a serial number, toshiba.com call-in center will tell you about your computer's part numbers. I did that for a cd drive 2-3 years back.

Good Luck
Wayne

Dec 30, 2007 | Toshiba Satellite A105 Notebook

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