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Toshiba Equium M50-192 Blank Screen when Boot

My Toshiba strated to over heat, so i took it apart cleaned it and put it back together but now it want start, Power light lights up, fan comes on and goes off then on agian after a while, but nothing on screen and no HDD activity. Connect external VDU Nothing!!, no sound at all...
Please can someone help.......
Everything is connected back as it was... I have exactly the same problem and so do a few other people on the net. This problem seems to be attached to the machine randomly crashing or BSOD , eventualy not POST booting at all. l am currently working on my machine. I will post a solution when I get it solved. Although any technical advice will be most welcome!

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  • widjet Jul 08, 2008

    Thanks for that, I do suspect the processor and am waiting for a
    replacement to test. I suspect that the overheating problem may have
    cooked the chip and there are "Heat" marks on the chip case on the
    side furthest from the heat sink. Will keep you posted.

  • widjet Aug 01, 2008

    Well Narrowed down the problem to the processor ZIF socket on the mother board. Have dismantled it and it looks like some contacts have come unstuck or broken . These are at the corners of the socket and may be due to the board flexing over time when picking up the machine. Problem is, I dont know how to replace this socket. The contacts are too small for me to repair so I need to replace the socket. But how do I get it off the board? Have removed the heat pad off the back of the board and this revealed that the socket is surface soldered and not through soldered ho hum ... Anyone any Ideas or solutions?? In hope - Wid

  • kevinh04 Jan 19, 2009

    i git the same problem have you solved yours yet ??

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This happens to mine often. I found restarting it and powering up an external connected VDU it would then start up and pressing Fn F9 eventually got the screen back. A cool day and powering up the VDU just at the right time works. I can then use it until it overheats again. 2 months or 2 mins depending on the weather. I'm going to buy a new machine soon.

Posted on Jul 30, 2008

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This sounds to be an issue with the processor. Try removing the processor, blowing it off, and reseating it firmly and properly. Put it back together and see if this cures it. Keep in mind that a malfunctioning processor can cause an overheating problem just as easily as a fan or heatsink.

Posted on Jul 07, 2008

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SOURCE: Toshiba Equium M50-192 Blank Screen when Boot

I don't know "where" you worked on it, but I hope you were'nt standing on carpet when you did.If everything is connectrd the way it was, then the only thing I can think of is ESD (ElectroStatic Discharge) damage.

Posted on Feb 06, 2008

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I don't know "where" you worked on it, but I hope you were'nt standing on carpet when you did.If everything is connectrd the way it was, then the only thing I can think of is ESD (ElectroStatic Discharge) damage.

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