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    Samsung T519 will not POST/Boot/Start

    Discussion in 'Samsung' started by B Ogbrush, Sep 28, 2012.

  1. B Ogbrush

    B Ogbrush Newbie

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    Hi My Samsung NP-R519 laptop refuses to boot.

    When I press the start button the power LED flashes briefly and the battery charge LED lights and remains on but nothing else happens. The battery and the power adaptor are OK. I have replaced the RAM and CPU with known working replacements and have also replaced the CMOS battery without success.

    The machine does not produce any beep codes or show anything on the screen. :(

    Does this behaviour show signs of an overheated GPU?

    Any idea's, hints or tips would be appreciated.
     
    B Ogbrush, Sep 28, 2012
    #1
  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    I haven't a clue about the symptoms of a cooked CPU (it should shut down before it reaches a fatal temperature). The first thing to try is to disconnect the mains power, remove the battery and hold down the power button for a minute. Dirty RAM contacts can cause the problem you describe but swapping the modules should fix that. Have you tried disconnecting the HDD? If that has died then it can stall the boot process.

    John
     
    John Ratsey, Sep 29, 2012
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  3. B Ogbrush

    B Ogbrush Newbie

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    It's not the CPU it's the GPU I think is cooked.

    I have removed the motherboard and set it up on the bench with just a known good CPU (with heat-sink and fan attached) and some working memory and have connected a monitor to the external VGA socket.

    The symptoms are still the same a brief flash of the Power LED with the battery charge LED lit. NO display and NO beep code.

    I removed the CMOS battery overnight before testing without any power to the motherboard.

    I still suspect a cooked GPU. I have nothing to loose so maybe I will have a go at 're-balling' the GPU chip (I've watched a few Youtube videos on the subject)
     
    B Ogbrush, Sep 29, 2012
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  4. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    Google can't find the T519 notebook. If if is on old model with the Nvidia 8600 or similar GPU then it could well be that it has died. It's impressive that it has lasted that long.

    John
     
    John Ratsey, Sep 30, 2012
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  5. B Ogbrush

    B Ogbrush Newbie

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    My bad

    Make that R519 (NP-R519) of around 2009 vintage
     
    B Ogbrush, Sep 30, 2012
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  6. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    Thanks. Which is the GPU? The one here is Intel which is normally quite robust.

    John
     
    John Ratsey, Sep 30, 2012
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  7. B Ogbrush

    B Ogbrush Newbie

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    B Ogbrush, Oct 2, 2012
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  8. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    Fascinating: Did that component disappear by itself?

    John
     
    John Ratsey, Oct 3, 2012
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