Toshiba L450D Radeon GPU

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  • SimeyJones
    New Member
    • May 2012
    • 2
    • Ireland

    #1

    Toshiba L450D Radeon GPU

    Hey guys,
    First post, long time user.


    I have a Tosh L450d 13x with no video display on internal or ext monitor.

    When powered up, the GPU doesn't even get warm, I don't think its drawing any current. CPU warms up, fan spins.

    I have tried GPU reflow twice with no success.

    I've been doing laptop/pc repairs, reflowing xboxes and ps3s for years but this is the first time I've attempted to reflow a Radeon GPU in a lead free laptop mobo.

    Opinions on whether it's more likely to be a dead Radeon GPU than a candidate for a longer hotter reflow would be very much appreciated.
    edit - I normally reflow with heatgun running at ~300c from a distance of 20cm for 1-2mins - maybe not enough for this board?

    Also - The AMD Sempron CPU in this board also wouldn't fire up when I first got this machine to look at, it sat there like a dead fish, didn't even get warm, fan didn't even spin. After getting some fresh paste in there and reseating the heatsink the CPU warms up and the fan spins - is it possible that the GPU is doing the same thing? It has one of those crappy thermal pads on it.

    Also- the build quality in laptops these last few years is diabolical, they used to build these things like tanks.
    Last edited by SimeyJones; 05-15-2012, 04:42 PM.
  • Koda
    Badcaps Veteran
    • Aug 2011
    • 317
    • Macedonia

    #2
    Re: Toshiba L450D Radeon GPU

    Try reflowing the GPU at higher temps, I go up to 430C for 4-5 mins. Also reflow ram chips surrounding the GPU if there are any.
    Guns don't solve problems. I'll take 12

    Comment

    • SimeyJones
      New Member
      • May 2012
      • 2
      • Ireland

      #3
      Re: Toshiba L450D Radeon GPU

      Thanks for response, I'll ramp up the heat.

      Comment

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