Question about Toshiba Satellite A105 Notebook

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Toshiba a105, wont power up, clicking sound

I bought an used toshiba a105 without the ac charger power supply and no battery. i try to use 12v direct,(done this with other laptop for years,no problem) laptop tried to lite up a couple of time but after that is dead, not ligths, then i bought the generic power supply but now only hear a faint click sound, still dead, no lds. I bougth a processor, same result. Bought a diferent motherboard, same result.

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I seem to have the same problem. I have an a105-4134. Ive had since June of 2006 and ive kept it clean and have replaced several components throughout its life.

I was working on it few days ago until it just shut off. Confused, I press the power button thinking maybe the power adapter wasn't plugged all the way in and the battery depleted and it shut off. So now the computer will now power on. It lights up but shuts off within 1 second. Keeps doing this over and over.

My first thought was the dc jack as ive read it is common to be faulty after long use. I ordered a new one and unfortunately it was not the culprit. I then suspected the cheap aftermarket power adapter which replaced the dead oem power adapter. Bought a new one and experienced the exact same symptoms yet again.

Now I'm digging deep removing all components one by one. With each one I remove, I gain a few seconds of time that it will stay on before shutting off on its own. I powered it on with only the motherboard and cpu and it does the same thing.

From the original problem in this post, the cpu and motherboard were swapped out and same symptoms still occurred. This being the case, the only component left undiagnosed is the power board itself.

This is where I noticed that the computer will power up and run on battery power. The adapter plugged in will charge the battery but not power the computer while running. With this discovery it means that it cannot be any of the main components causing the problem.

Back to the power board, an obvious problem area seeing how this is tied in with power components. From the looks of it, it seems like a simple switch board but i may be wrong. My next step is to order a new power board. I will let you all know how it turns out.

Posted on Apr 13, 2010

  • cplum Feb 06, 2011

    what happened? i'm having the same problem. Did you replace the power board and if so, did it work? where did you get one and how much was it?

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This just happened to me yesterday. First my touch pad was not responsive. Then I started to hear this clicking sound. I turned off the laptop (big mistake) and tried to boot it up, I received boot failures like mad. I opened up the DVD drive, the cover fell off and the piece slid right out. I know shopping can be strenuous but c'mon man. So I cannot get it to boot up at all, terrible clicking sound so I'm going in.

Posted on Nov 25, 2011

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Try taking the Hard drive out... will it boot up? If it does, get a new Hard drive.

Try taking out the memory... does it give you a 'beeping' sound? If it does, then try reseating or replacing memory. If you have two sticks, try one at a time.

Take out as much stuff as you can, like the wireless card, Hard drive, memory, everything but the motherboard, processor and LCD.

Maybe you bought a bad or non-compatible A/C adapter....

Posted on Sep 08, 2009

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