Question about Toshiba Satellite A105 Notebook

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Toshiba Satellite A105 no power

I own a laptop computer, Toshiba Satellite A105-S1013 System Unit. I experienced a complete power failure while watching a DVD movie around 1 hour into the movie. My laptop was plugged into the AC adapter at the time because the battery was holding a charge for less than 30 minutes. My laptop is almost 2 years old so I assumed that the battery was just almost worn out. It was only while reading forum posts in an effort to determine the potential cause of my current power failure that I realized a BIOS upgrade is available on the Toshiba website that may have potentially fixed the battery problem. Could that have something to do with the power failure? Anyway, I am sure that my AC adapter is working properly because I took it to the shop and they tested it. I read that some Toshiba Satellites have had problems with the power connectors losing their contact with the motherboard (MB) via worn solder connections. I took my laptop apart to see if this might be the problem. The power connector on my laptop is fitted in a slot on the back of the laptop case and connected to the MB via a small power cord that is plugged into the MB. Upon a visual inspection this connection seemed okay. I did not disconnect it to examine it further. Should I disconnect it and clean the contacts and try reconnecting it? Should I then solder it? Should I purchase a new power connector and try replacing the original one? When the laptop is plugged into the AC adapter no power indicator lights come on. I have tried this with the battery in and with the battery removed. As suggested in a previous post, I have also removed the battery and disconnected the laptop from the AC adapter, pressed the power button for 20 seconds, plugged the laptop back in to the AC adapter and then tried to turn it on again – with no result and still no power indicator light coming on. Could my problem be a RAM chip that has gone bad? Any other suggestions would be greatly appreciated

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  • Anonymous Sep 23, 2008

    same shite

  • Anonymous Sep 25, 2008

    I have the same thing happen to me no power at all anyone find a fix yet??

  • mmejia66 Sep 25, 2008

    Hi! Mine is a A105-S4211 It went power dead without notice. Have tried with brand new adapter, with and w/o battery, same thing. Curiously, there's a very faint "tick" sound comming from the MB when it is plugged to a/c. Have taken the laptop apart and keep hearing that sound.

    Does anyone know how to trace/diagnose power issues in the mb?

  • the_analyst Dec 13, 2008

    I dont have the same problem but I have a Toshiba A100/A105 and my screen sometimes just goes black, if I put pressure on the screen or move it up and down, sometimes it comes back on the everything works fine. Now I just can't get it to come back at all.

  • Anonymous Dec 15, 2008

    I have an A105 which my son uses. Its original problem was that the power connector was loose and recharging the battery was an iffy thing. Even a new pwer cord and converter did not solve the problem. The connector to the mother board makes intermittent contact. Last night the computer just went dead in the middle of an application and no lights show any life. according to GeekSquad the likely culprit is the power contact attached to the motherboard and the solution is rewelding the connection.

  • ericmarfat Jan 02, 2009

    Toshiba A105-S2081

    I have diagnosed the issue in a very non-technical way but I hope my explanation of the issue will allow someone to pinpoint the exact problem.

    Computer is Off and plugged into AC. Battery Light is Orange. The computer may or may or may not be charging. There is no ticking noise.

    I turn on the PC. Battery Light Remains Orange. The below scenarios may occur:

    1. A faint ticking noise begins. The computer boots up. It dies when the juice runs out. The ticking noise then stops.
    2. There is no ticking noise. The computer boots up properly and is functional. The Battery Power Meter is charging up the battery. Great!

    When A occurs, I know how to stop the ticking noise and subsequently the battery begins to charge!

    I do this by fidgeting with the power cord that’s plugged into the back of the PC and holding it firmly in a given direction that stops the ticking noise.

    Ticking Noise Stops = Battery Charging = Functional Computer.

    Hence I have concluded that the connection of the power cable to the PC is not “touching” properly. Once I let go of my hold (and hence the cable moves ever so slightly) the ticking resumes and the battery begins to drain until the PC powers down.

    I'm guessing its the socket on the PC thats the problem?!

    Please help.


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Try looking at the DC input. My brother's 1st laptop had that same problem. All we need to do is solder it. Remember-1st dc connection, not the one on the MB.

Posted on Aug 19, 2008

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If you don't get any DC voltage (or too low), check the DC plug of the AC adapter. The inside of the plug should be + and the outside should be -. If you are getting voltage there, but not the motherboard, chances are it's the jack or the mini power cable on the motherboard. These can be replaced, it just depends on how confident you are about doing it yourself :).

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Okay, lets troubleshoot this:
1)Does your laptop run on battery alone ?
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a)test between the center contact and the motherboard.
b)test between the outside metal cover of the jack ,and the motherboard.
c)If either of these fails continuity,replace the jack.
2)does your laptop now power up on AC ?
No)Try the BIOS upgrade.

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