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Hi, i have an Advent 5401 with a nVidia 8400 gs graphic card, a couple of days ago i left it running a full scan and backup overnight but when turned it back on the next morning it was no longer working, it doeas not boot up and no there is no screen, when turning it on it just gives 3 beeps. i am told, and it is consistent with comments on the problem on some forum sites, that the graphic chip has gone. what are the my options, can this be repaired and if so what costs can i expect. is this something i could try myself, i read the usually the cards are soldiered on the motherboards on laptops please help thanks in advance antonio

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This problem is comming from your NVDIA graphics chip becomming open circuit on the BGA connections to the motherboard. Not a very good method of attaching high temperature devices. Having worked for many years in electronic manfacturing the simplest way to repair it is to reflow the component on the board. You will need a good heat gun which can produce around 200deg C. completely dismantle the laptop and pre heat the m/board in the kitchen oven to 100deg and then heat the chip from the underside with the heat gun aprox 4 inches away moving it back and forth for a minute or so. dont let the heat on the plastic screen connector on the board as this will melt it. let it cooldown before assembly rebuild and it should be ok. make sure you check the cooling fan as this get blocked with fluff and stuff,. monty

Posted on Nov 14, 2010

  • bongie76 Mar 23, 2011

    monty1967
    Thanks a lot, very helpful.

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